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Finding the Fourth Proportional to 60,267.68, 90,402.72 and 42,425.36

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Solution

The fourth proportional to 60,267.68, 90,402.72 and 42,425.36 is: 63,638.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,267.68 : 90,402.72 = 42,425.36 : x
  2. Step 2: Convert to fraction form
    60,267.68/90,402.72 = 42,425.36/x
  3. Step 3: Cross multiply
    60,267.68x = 90,402.72 × 42,425.36
  4. Step 4: Simplify right side
    60,267.68x = 3,835,367,940.98
  5. Step 5: Solve for x
    x = 3,835,367,940.98/60,267.68
  6. Step 6: Final answer
    x = 63,638.88

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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.