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Finding the Fourth Proportional to 108,557.34, 162,891.65 and 51,695.56

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Solution

The fourth proportional to 108,557.34, 162,891.65 and 51,695.56 is: 77,569.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,557.34 : 162,891.65 = 51,695.56 : x
  2. Step 2: Convert to fraction form
    108,557.34/162,891.65 = 51,695.56/x
  3. Step 3: Cross multiply
    108,557.34x = 162,891.65 × 51,695.56
  4. Step 4: Simplify right side
    108,557.34x = 8,420,775,066.07
  5. Step 5: Solve for x
    x = 8,420,775,066.07/108,557.34
  6. Step 6: Final answer
    x = 77,569.84

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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.