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Finding the Fourth Proportional to 38,886.60, 53,663.40 and 22,119.60

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Solution

The fourth proportional to 38,886.60, 53,663.40 and 22,119.60 is: 30,524.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    38,886.60 : 53,663.40 = 22,119.60 : x
  2. Step 2: Convert to fraction form
    38,886.60/53,663.40 = 22,119.60/x
  3. Step 3: Cross multiply
    38,886.60x = 53,663.40 × 22,119.60
  4. Step 4: Simplify right side
    38,886.60x = 1,187,012,942.64
  5. Step 5: Solve for x
    x = 1,187,012,942.64/38,886.60
  6. Step 6: Final answer
    x = 30,524.99

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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.