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Finding the Fourth Proportional to 577,445.30, 866,158.43 and 172,638.47

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Solution

The fourth proportional to 577,445.30, 866,158.43 and 172,638.47 is: 258,954.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    577,445.30 : 866,158.43 = 172,638.47 : x
  2. Step 2: Convert to fraction form
    577,445.30/866,158.43 = 172,638.47/x
  3. Step 3: Cross multiply
    577,445.30x = 866,158.43 × 172,638.47
  4. Step 4: Simplify right side
    577,445.30x = 149,532,260,938.82
  5. Step 5: Solve for x
    x = 149,532,260,938.82/577,445.30
  6. Step 6: Final answer
    x = 258,954.85

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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.