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Finding the Fourth Proportional to 67,352.88, 92,908.40 and 42,158.64

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Solution

The fourth proportional to 67,352.88, 92,908.40 and 42,158.64 is: 58,154.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,352.88 : 92,908.40 = 42,158.64 : x
  2. Step 2: Convert to fraction form
    67,352.88/92,908.40 = 42,158.64/x
  3. Step 3: Cross multiply
    67,352.88x = 92,908.40 × 42,158.64
  4. Step 4: Simplify right side
    67,352.88x = 3,916,891,788.58
  5. Step 5: Solve for x
    x = 3,916,891,788.58/67,352.88
  6. Step 6: Final answer
    x = 58,154.78

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.