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Finding the Fourth Proportional to 573,381.36, 791,265.24 and 318,731.76

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Solution

The fourth proportional to 573,381.36, 791,265.24 and 318,731.76 is: 439,849.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,381.36 : 791,265.24 = 318,731.76 : x
  2. Step 2: Convert to fraction form
    573,381.36/791,265.24 = 318,731.76/x
  3. Step 3: Cross multiply
    573,381.36x = 791,265.24 × 318,731.76
  4. Step 4: Simplify right side
    573,381.36x = 252,201,362,572.02
  5. Step 5: Solve for x
    x = 252,201,362,572.02/573,381.36
  6. Step 6: Final answer
    x = 439,849.25

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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.