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Finding the Fourth Proportional to 27,886.99, 38,484.09 and 15,140.19

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Solution

The fourth proportional to 27,886.99, 38,484.09 and 15,140.19 is: 20,893.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,886.99 : 38,484.09 = 15,140.19 : x
  2. Step 2: Convert to fraction form
    27,886.99/38,484.09 = 15,140.19/x
  3. Step 3: Cross multiply
    27,886.99x = 38,484.09 × 15,140.19
  4. Step 4: Simplify right side
    27,886.99x = 582,656,376.22
  5. Step 5: Solve for x
    x = 582,656,376.22/27,886.99
  6. Step 6: Final answer
    x = 20,893.49

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Find fourth proportional to 13,943.49, 19,242.05 and 7,570.09
Half scale
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Double scale
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Similar ratio
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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.