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Finding the Fourth Proportional to 573,632.64, 791,521.44 and 318,985.68

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Solution

The fourth proportional to 573,632.64, 791,521.44 and 318,985.68 is: 440,149.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,632.64 : 791,521.44 = 318,985.68 : x
  2. Step 2: Convert to fraction form
    573,632.64/791,521.44 = 318,985.68/x
  3. Step 3: Cross multiply
    573,632.64x = 791,521.44 × 318,985.68
  4. Step 4: Simplify right side
    573,632.64x = 252,484,004,772.98
  5. Step 5: Solve for x
    x = 252,484,004,772.98/573,632.64
  6. Step 6: Final answer
    x = 440,149.30

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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.