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Finding the Fourth Proportional to 215,580.84, 297,478.86 and 124,965.24

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Solution

The fourth proportional to 215,580.84, 297,478.86 and 124,965.24 is: 172,438.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    215,580.84 : 297,478.86 = 124,965.24 : x
  2. Step 2: Convert to fraction form
    215,580.84/297,478.86 = 124,965.24/x
  3. Step 3: Cross multiply
    215,580.84x = 297,478.86 × 124,965.24
  4. Step 4: Simplify right side
    215,580.84x = 37,174,517,134.83
  5. Step 5: Solve for x
    x = 37,174,517,134.83/215,580.84
  6. Step 6: Final answer
    x = 172,438.87

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.