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Finding the Fourth Proportional to 72,506.88, 108,737.28 and 49,282.56

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Solution

The fourth proportional to 72,506.88, 108,737.28 and 49,282.56 is: 73,908.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,506.88 : 108,737.28 = 49,282.56 : x
  2. Step 2: Convert to fraction form
    72,506.88/108,737.28 = 49,282.56/x
  3. Step 3: Cross multiply
    72,506.88x = 108,737.28 × 49,282.56
  4. Step 4: Simplify right side
    72,506.88x = 5,358,851,525.84
  5. Step 5: Solve for x
    x = 5,358,851,525.84/72,506.88
  6. Step 6: Final answer
    x = 73,908.18

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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.