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Finding the Fourth Proportional to 386,950.02, 533,854.17 and 252,891.78

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Solution

The fourth proportional to 386,950.02, 533,854.17 and 252,891.78 is: 348,901.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    386,950.02 : 533,854.17 = 252,891.78 : x
  2. Step 2: Convert to fraction form
    386,950.02/533,854.17 = 252,891.78/x
  3. Step 3: Cross multiply
    386,950.02x = 533,854.17 × 252,891.78
  4. Step 4: Simplify right side
    386,950.02x = 135,007,331,311.72
  5. Step 5: Solve for x
    x = 135,007,331,311.72/386,950.02
  6. Step 6: Final answer
    x = 348,901.21

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1.5x scale

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.