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Finding the Fourth Proportional to 67,706.80, 101,569.65 and 28,254.87

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Solution

The fourth proportional to 67,706.80, 101,569.65 and 28,254.87 is: 42,386.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,706.80 : 101,569.65 = 28,254.87 : x
  2. Step 2: Convert to fraction form
    67,706.80/101,569.65 = 28,254.87/x
  3. Step 3: Cross multiply
    67,706.80x = 101,569.65 × 28,254.87
  4. Step 4: Simplify right side
    67,706.80x = 2,869,837,115.42
  5. Step 5: Solve for x
    x = 2,869,837,115.42/67,706.80
  6. Step 6: Final answer
    x = 42,386.25

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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.