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Finding the Fourth Proportional to 429,781.91, 644,801.65 and 173,482.52

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Solution

The fourth proportional to 429,781.91, 644,801.65 and 173,482.52 is: 260,275.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    429,781.91 : 644,801.65 = 173,482.52 : x
  2. Step 2: Convert to fraction form
    429,781.91/644,801.65 = 173,482.52/x
  3. Step 3: Cross multiply
    429,781.91x = 644,801.65 × 173,482.52
  4. Step 4: Simplify right side
    429,781.91x = 111,861,811,484.44
  5. Step 5: Solve for x
    x = 111,861,811,484.44/429,781.91
  6. Step 6: Final answer
    x = 260,275.76

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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.