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Finding the Fourth Proportional to 312,366.08, 468,545.04 and 75,710.80

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Solution

The fourth proportional to 312,366.08, 468,545.04 and 75,710.80 is: 113,565.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    312,366.08 : 468,545.04 = 75,710.80 : x
  2. Step 2: Convert to fraction form
    312,366.08/468,545.04 = 75,710.80/x
  3. Step 3: Cross multiply
    312,366.08x = 468,545.04 × 75,710.80
  4. Step 4: Simplify right side
    312,366.08x = 35,473,919,814.43
  5. Step 5: Solve for x
    x = 35,473,919,814.43/312,366.08
  6. Step 6: Final answer
    x = 113,565.21

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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.