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Finding the Fourth Proportional to 52,545.80, 78,818.70 and 49,435.40

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Solution

The fourth proportional to 52,545.80, 78,818.70 and 49,435.40 is: 74,153.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,545.80 : 78,818.70 = 49,435.40 : x
  2. Step 2: Convert to fraction form
    52,545.80/78,818.70 = 49,435.40/x
  3. Step 3: Cross multiply
    52,545.80x = 78,818.70 × 49,435.40
  4. Step 4: Simplify right side
    52,545.80x = 3,896,433,961.98
  5. Step 5: Solve for x
    x = 3,896,433,961.98/52,545.80
  6. Step 6: Final answer
    x = 74,153.10

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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.