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Finding the Fourth Proportional to 42,393.72, 63,602.10 and 14,693.88

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Solution

The fourth proportional to 42,393.72, 63,602.10 and 14,693.88 is: 22,044.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,393.72 : 63,602.10 = 14,693.88 : x
  2. Step 2: Convert to fraction form
    42,393.72/63,602.10 = 14,693.88/x
  3. Step 3: Cross multiply
    42,393.72x = 63,602.10 × 14,693.88
  4. Step 4: Simplify right side
    42,393.72x = 934,561,625.15
  5. Step 5: Solve for x
    x = 934,561,625.15/42,393.72
  6. Step 6: Final answer
    x = 22,044.81

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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.