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Finding the Fourth Proportional to 32,139.60, 48,187.80 and 14,600.40

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Solution

The fourth proportional to 32,139.60, 48,187.80 and 14,600.40 is: 21,890.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    32,139.60 : 48,187.80 = 14,600.40 : x
  2. Step 2: Convert to fraction form
    32,139.60/48,187.80 = 14,600.40/x
  3. Step 3: Cross multiply
    32,139.60x = 48,187.80 × 14,600.40
  4. Step 4: Simplify right side
    32,139.60x = 703,561,155.12
  5. Step 5: Solve for x
    x = 703,561,155.12/32,139.60
  6. Step 6: Final answer
    x = 21,890.79

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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.