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Finding the Fourth Proportional to 573,613.68, 791,554.37 and 318,959.40

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Solution

The fourth proportional to 573,613.68, 791,554.37 and 318,959.40 is: 440,145.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,613.68 : 791,554.37 = 318,959.40 : x
  2. Step 2: Convert to fraction form
    573,613.68/791,554.37 = 318,959.40/x
  3. Step 3: Cross multiply
    573,613.68x = 791,554.37 × 318,959.40
  4. Step 4: Simplify right side
    573,613.68x = 252,473,705,327.78
  5. Step 5: Solve for x
    x = 252,473,705,327.78/573,613.68
  6. Step 6: Final answer
    x = 440,145.89

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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.