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Finding the Fourth Proportional to 619.01, 928.54 and 186.13

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Solution

The fourth proportional to 619.01, 928.54 and 186.13 is: 279.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    619.01 : 928.54 = 186.13 : x
  2. Step 2: Convert to fraction form
    619.01/928.54 = 186.13/x
  3. Step 3: Cross multiply
    619.01x = 928.54 × 186.13
  4. Step 4: Simplify right side
    619.01x = 172,824.51
  5. Step 5: Solve for x
    x = 172,824.51/619.01
  6. Step 6: Final answer
    x = 279.20

Related Problems

Find fourth proportional to 309.50, 464.27 and 93.06
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 (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.