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Finding the Fourth Proportional to 72,351.40, 108,527.10 and 48,731.80

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Solution

The fourth proportional to 72,351.40, 108,527.10 and 48,731.80 is: 73,097.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,351.40 : 108,527.10 = 48,731.80 : x
  2. Step 2: Convert to fraction form
    72,351.40/108,527.10 = 48,731.80/x
  3. Step 3: Cross multiply
    72,351.40x = 108,527.10 × 48,731.80
  4. Step 4: Simplify right side
    72,351.40x = 5,288,720,931.78
  5. Step 5: Solve for x
    x = 5,288,720,931.78/72,351.40
  6. Step 6: Final answer
    x = 73,097.70

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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.