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Finding the Fourth Proportional to 392,312.60, 587,681.18 and 332,083.16

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Solution

The fourth proportional to 392,312.60, 587,681.18 and 332,083.16 is: 497,457.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    392,312.60 : 587,681.18 = 332,083.16 : x
  2. Step 2: Convert to fraction form
    392,312.60/587,681.18 = 332,083.16/x
  3. Step 3: Cross multiply
    392,312.60x = 587,681.18 × 332,083.16
  4. Step 4: Simplify right side
    392,312.60x = 195,159,023,326.93
  5. Step 5: Solve for x
    x = 195,159,023,326.93/392,312.60
  6. Step 6: Final answer
    x = 497,457.95

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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.