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Finding the Fourth Proportional to 573,132.90, 859,699.35 and 440,681.70

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Solution

The fourth proportional to 573,132.90, 859,699.35 and 440,681.70 is: 661,022.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,132.90 : 859,699.35 = 440,681.70 : x
  2. Step 2: Convert to fraction form
    573,132.90/859,699.35 = 440,681.70/x
  3. Step 3: Cross multiply
    573,132.90x = 859,699.35 × 440,681.70
  4. Step 4: Simplify right side
    573,132.90x = 378,853,771,046.90
  5. Step 5: Solve for x
    x = 378,853,771,046.90/573,132.90
  6. Step 6: Final answer
    x = 661,022.55

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.