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Finding the Fourth Proportional to 606,915.10, 910,372.65 and 417,958.30

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Solution

The fourth proportional to 606,915.10, 910,372.65 and 417,958.30 is: 626,937.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,915.10 : 910,372.65 = 417,958.30 : x
  2. Step 2: Convert to fraction form
    606,915.10/910,372.65 = 417,958.30/x
  3. Step 3: Cross multiply
    606,915.10x = 910,372.65 × 417,958.30
  4. Step 4: Simplify right side
    606,915.10x = 380,497,805,160.50
  5. Step 5: Solve for x
    x = 380,497,805,160.50/606,915.10
  6. Step 6: Final answer
    x = 626,937.45

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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.