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Finding the Fourth Proportional to 573,049.73, 790,808.79 and 318,400.92

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Solution

The fourth proportional to 573,049.73, 790,808.79 and 318,400.92 is: 439,393.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,049.73 : 790,808.79 = 318,400.92 : x
  2. Step 2: Convert to fraction form
    573,049.73/790,808.79 = 318,400.92/x
  3. Step 3: Cross multiply
    573,049.73x = 790,808.79 × 318,400.92
  4. Step 4: Simplify right side
    573,049.73x = 251,794,246,280.09
  5. Step 5: Solve for x
    x = 251,794,246,280.09/573,049.73
  6. Step 6: Final answer
    x = 439,393.36

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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.