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Finding the Fourth Proportional to 39,393.59, 59,101.34 and 21,875.72

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Solution

The fourth proportional to 39,393.59, 59,101.34 and 21,875.72 is: 32,819.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    39,393.59 : 59,101.34 = 21,875.72 : x
  2. Step 2: Convert to fraction form
    39,393.59/59,101.34 = 21,875.72/x
  3. Step 3: Cross multiply
    39,393.59x = 59,101.34 × 21,875.72
  4. Step 4: Simplify right side
    39,393.59x = 1,292,883,960.58
  5. Step 5: Solve for x
    x = 1,292,883,960.58/39,393.59
  6. Step 6: Final answer
    x = 32,819.66

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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.