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Finding the Fourth Proportional to 125,903.10, 188,854.65 and 118,515.90

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Solution

The fourth proportional to 125,903.10, 188,854.65 and 118,515.90 is: 177,773.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,903.10 : 188,854.65 = 118,515.90 : x
  2. Step 2: Convert to fraction form
    125,903.10/188,854.65 = 118,515.90/x
  3. Step 3: Cross multiply
    125,903.10x = 188,854.65 × 118,515.90
  4. Step 4: Simplify right side
    125,903.10x = 22,382,278,813.94
  5. Step 5: Solve for x
    x = 22,382,278,813.94/125,903.10
  6. Step 6: Final answer
    x = 177,773.85

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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.