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Finding the Fourth Proportional to 349,357.28, 524,146.72 and 124,712.78

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Solution

The fourth proportional to 349,357.28, 524,146.72 and 124,712.78 is: 187,108.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    349,357.28 : 524,146.72 = 124,712.78 : x
  2. Step 2: Convert to fraction form
    349,357.28/524,146.72 = 124,712.78/x
  3. Step 3: Cross multiply
    349,357.28x = 524,146.72 × 124,712.78
  4. Step 4: Simplify right side
    349,357.28x = 65,367,794,579.08
  5. Step 5: Solve for x
    x = 65,367,794,579.08/349,357.28
  6. Step 6: Final answer
    x = 187,108.72

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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.