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Finding the Fourth Proportional to 67,929.95, 101,862.15 and 28,476.47

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Solution

The fourth proportional to 67,929.95, 101,862.15 and 28,476.47 is: 42,700.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,929.95 : 101,862.15 = 28,476.47 : x
  2. Step 2: Convert to fraction form
    67,929.95/101,862.15 = 28,476.47/x
  3. Step 3: Cross multiply
    67,929.95x = 101,862.15 × 28,476.47
  4. Step 4: Simplify right side
    67,929.95x = 2,900,673,949.30
  5. Step 5: Solve for x
    x = 2,900,673,949.30/67,929.95
  6. Step 6: Final answer
    x = 42,700.96

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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.