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Finding the Fourth Proportional to 573,048.73, 790,807.41 and 318,399.92

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Solution

The fourth proportional to 573,048.73, 790,807.41 and 318,399.92 is: 439,391.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,048.73 : 790,807.41 = 318,399.92 : x
  2. Step 2: Convert to fraction form
    573,048.73/790,807.41 = 318,399.92/x
  3. Step 3: Cross multiply
    573,048.73x = 790,807.41 × 318,399.92
  4. Step 4: Simplify right side
    573,048.73x = 251,793,016,079.41
  5. Step 5: Solve for x
    x = 251,793,016,079.41/573,048.73
  6. Step 6: Final answer
    x = 439,391.98

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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.