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Finding the Fourth Proportional to 59,138.92, 88,720.06 and 21,699.30

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Solution

The fourth proportional to 59,138.92, 88,720.06 and 21,699.30 is: 32,553.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,138.92 : 88,720.06 = 21,699.30 : x
  2. Step 2: Convert to fraction form
    59,138.92/88,720.06 = 21,699.30/x
  3. Step 3: Cross multiply
    59,138.92x = 88,720.06 × 21,699.30
  4. Step 4: Simplify right side
    59,138.92x = 1,925,163,197.96
  5. Step 5: Solve for x
    x = 1,925,163,197.96/59,138.92
  6. Step 6: Final answer
    x = 32,553.24

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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.