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Finding the Fourth Proportional to 542,930.65, 749,279.72 and 313,497.59

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Solution

The fourth proportional to 542,930.65, 749,279.72 and 313,497.59 is: 432,647.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    542,930.65 : 749,279.72 = 313,497.59 : x
  2. Step 2: Convert to fraction form
    542,930.65/749,279.72 = 313,497.59/x
  3. Step 3: Cross multiply
    542,930.65x = 749,279.72 × 313,497.59
  4. Step 4: Simplify right side
    542,930.65x = 234,897,385,944.50
  5. Step 5: Solve for x
    x = 234,897,385,944.50/542,930.65
  6. Step 6: Final answer
    x = 432,647.13

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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.