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Finding the Fourth Proportional to 72,711.96, 109,009.10 and 32,701.64

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Solution

The fourth proportional to 72,711.96, 109,009.10 and 32,701.64 is: 49,025.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,711.96 : 109,009.10 = 32,701.64 : x
  2. Step 2: Convert to fraction form
    72,711.96/109,009.10 = 32,701.64/x
  3. Step 3: Cross multiply
    72,711.96x = 109,009.10 × 32,701.64
  4. Step 4: Simplify right side
    72,711.96x = 3,564,775,636.37
  5. Step 5: Solve for x
    x = 3,564,775,636.37/72,711.96
  6. Step 6: Final answer
    x = 49,025.99

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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.