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Finding the Fourth Proportional to 58,493.64, 80,720.91 and 31,635.93

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Solution

The fourth proportional to 58,493.64, 80,720.91 and 31,635.93 is: 43,657.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,493.64 : 80,720.91 = 31,635.93 : x
  2. Step 2: Convert to fraction form
    58,493.64/80,720.91 = 31,635.93/x
  3. Step 3: Cross multiply
    58,493.64x = 80,720.91 × 31,635.93
  4. Step 4: Simplify right side
    58,493.64x = 2,553,681,058.30
  5. Step 5: Solve for x
    x = 2,553,681,058.30/58,493.64
  6. Step 6: Final answer
    x = 43,657.41

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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.