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Finding the Fourth Proportional to 604,895.10, 907,342.65 and 394,770.30

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Solution

The fourth proportional to 604,895.10, 907,342.65 and 394,770.30 is: 592,155.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    604,895.10 : 907,342.65 = 394,770.30 : x
  2. Step 2: Convert to fraction form
    604,895.10/907,342.65 = 394,770.30/x
  3. Step 3: Cross multiply
    604,895.10x = 907,342.65 × 394,770.30
  4. Step 4: Simplify right side
    604,895.10x = 358,191,930,143.30
  5. Step 5: Solve for x
    x = 358,191,930,143.30/604,895.10
  6. Step 6: Final answer
    x = 592,155.45

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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.