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Finding the Fourth Proportional to 261,565.74, 392,346.72 and 173,214.72

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Solution

The fourth proportional to 261,565.74, 392,346.72 and 173,214.72 is: 259,820.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,565.74 : 392,346.72 = 173,214.72 : x
  2. Step 2: Convert to fraction form
    261,565.74/392,346.72 = 173,214.72/x
  3. Step 3: Cross multiply
    261,565.74x = 392,346.72 × 173,214.72
  4. Step 4: Simplify right side
    261,565.74x = 67,960,227,247.72
  5. Step 5: Solve for x
    x = 67,960,227,247.72/261,565.74
  6. Step 6: Final answer
    x = 259,820.83

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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.