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Finding the Fourth Proportional to 532,987.67, 735,286.73 and 318,002.73

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Solution

The fourth proportional to 532,987.67, 735,286.73 and 318,002.73 is: 438,702.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    532,987.67 : 735,286.73 = 318,002.73 : x
  2. Step 2: Convert to fraction form
    532,987.67/735,286.73 = 318,002.73/x
  3. Step 3: Cross multiply
    532,987.67x = 735,286.73 × 318,002.73
  4. Step 4: Simplify right side
    532,987.67x = 233,823,185,882.76
  5. Step 5: Solve for x
    x = 233,823,185,882.76/532,987.67
  6. Step 6: Final answer
    x = 438,702.81

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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.