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Finding the Fourth Proportional to 125,616.30, 188,359.65 and 46,689.90

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Solution

The fourth proportional to 125,616.30, 188,359.65 and 46,689.90 is: 70,010.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,616.30 : 188,359.65 = 46,689.90 : x
  2. Step 2: Convert to fraction form
    125,616.30/188,359.65 = 46,689.90/x
  3. Step 3: Cross multiply
    125,616.30x = 188,359.65 × 46,689.90
  4. Step 4: Simplify right side
    125,616.30x = 8,794,493,222.54
  5. Step 5: Solve for x
    x = 8,794,493,222.54/125,616.30
  6. Step 6: Final answer
    x = 70,010.76

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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.