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Finding the Fourth Proportional to 52,397.80, 78,240.31 and 49,437.88

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Solution

The fourth proportional to 52,397.80, 78,240.31 and 49,437.88 is: 73,820.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,397.80 : 78,240.31 = 49,437.88 : x
  2. Step 2: Convert to fraction form
    52,397.80/78,240.31 = 49,437.88/x
  3. Step 3: Cross multiply
    52,397.80x = 78,240.31 × 49,437.88
  4. Step 4: Simplify right side
    52,397.80x = 3,868,035,056.94
  5. Step 5: Solve for x
    x = 3,868,035,056.94/52,397.80
  6. Step 6: Final answer
    x = 73,820.56

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.