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Finding the Fourth Proportional to 73,899.52, 101,989.47 and 42,063.28

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Solution

The fourth proportional to 73,899.52, 101,989.47 and 42,063.28 is: 58,051.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,899.52 : 101,989.47 = 42,063.28 : x
  2. Step 2: Convert to fraction form
    73,899.52/101,989.47 = 42,063.28/x
  3. Step 3: Cross multiply
    73,899.52x = 101,989.47 × 42,063.28
  4. Step 4: Simplify right side
    73,899.52x = 4,290,011,633.66
  5. Step 5: Solve for x
    x = 4,290,011,633.66/73,899.52
  6. Step 6: Final answer
    x = 58,051.96

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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.