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Finding the Fourth Proportional to 261,808.34, 392,712.50 and 173,043.47

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Solution

The fourth proportional to 261,808.34, 392,712.50 and 173,043.47 is: 259,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,808.34 : 392,712.50 = 173,043.47 : x
  2. Step 2: Convert to fraction form
    261,808.34/392,712.50 = 173,043.47/x
  3. Step 3: Cross multiply
    261,808.34x = 392,712.50 × 173,043.47
  4. Step 4: Simplify right side
    261,808.34x = 67,956,335,126.76
  5. Step 5: Solve for x
    x = 67,956,335,126.76/261,808.34
  6. Step 6: Final answer
    x = 259,565.21

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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.