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Finding the Fourth Proportional to 573,611.68, 791,551.61 and 318,957.40

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Solution

The fourth proportional to 573,611.68, 791,551.61 and 318,957.40 is: 440,143.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,611.68 : 791,551.61 = 318,957.40 : x
  2. Step 2: Convert to fraction form
    573,611.68/791,551.61 = 318,957.40/x
  3. Step 3: Cross multiply
    573,611.68x = 791,551.61 × 318,957.40
  4. Step 4: Simplify right side
    573,611.68x = 252,471,241,896.63
  5. Step 5: Solve for x
    x = 252,471,241,896.63/573,611.68
  6. Step 6: Final answer
    x = 440,143.13

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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.