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Finding the Fourth Proportional to 572,433.90, 859,077.45 and 218,139.90

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Solution

The fourth proportional to 572,433.90, 859,077.45 and 218,139.90 is: 327,372.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,433.90 : 859,077.45 = 218,139.90 : x
  2. Step 2: Convert to fraction form
    572,433.90/859,077.45 = 218,139.90/x
  3. Step 3: Cross multiply
    572,433.90x = 859,077.45 × 218,139.90
  4. Step 4: Simplify right side
    572,433.90x = 187,399,069,035.26
  5. Step 5: Solve for x
    x = 187,399,069,035.26/572,433.90
  6. Step 6: Final answer
    x = 327,372.42

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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.