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Finding the Fourth Proportional to 872,655.92, 1,203,773.12 and 523,707.12

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Solution

The fourth proportional to 872,655.92, 1,203,773.12 and 523,707.12 is: 722,420.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    872,655.92 : 1,203,773.12 = 523,707.12 : x
  2. Step 2: Convert to fraction form
    872,655.92/1,203,773.12 = 523,707.12/x
  3. Step 3: Cross multiply
    872,655.92x = 1,203,773.12 × 523,707.12
  4. Step 4: Simplify right side
    872,655.92x = 630,424,553,808.62
  5. Step 5: Solve for x
    x = 630,424,553,808.62/872,655.92
  6. Step 6: Final answer
    x = 722,420.53

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Double scale
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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.