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Finding the Fourth Proportional to 124,794.40, 187,215.90 and 53,716.90

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Solution

The fourth proportional to 124,794.40, 187,215.90 and 53,716.90 is: 80,585.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    124,794.40 : 187,215.90 = 53,716.90 : x
  2. Step 2: Convert to fraction form
    124,794.40/187,215.90 = 53,716.90/x
  3. Step 3: Cross multiply
    124,794.40x = 187,215.90 × 53,716.90
  4. Step 4: Simplify right side
    124,794.40x = 10,056,657,778.71
  5. Step 5: Solve for x
    x = 10,056,657,778.71/124,794.40
  6. Step 6: Final answer
    x = 80,585.81

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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.