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Finding the Fourth Proportional to 125,236.79, 187,767.69 and 46,340.78

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Solution

The fourth proportional to 125,236.79, 187,767.69 and 46,340.78 is: 69,478.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,236.79 : 187,767.69 = 46,340.78 : x
  2. Step 2: Convert to fraction form
    125,236.79/187,767.69 = 46,340.78/x
  3. Step 3: Cross multiply
    125,236.79x = 187,767.69 × 46,340.78
  4. Step 4: Simplify right side
    125,236.79x = 8,701,301,213.40
  5. Step 5: Solve for x
    x = 8,701,301,213.40/125,236.79
  6. Step 6: Final answer
    x = 69,478.79

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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.