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Finding the Fourth Proportional to 108,543.28, 162,534.52 and 74,913.07

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Solution

The fourth proportional to 108,543.28, 162,534.52 and 74,913.07 is: 112,176.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,543.28 : 162,534.52 = 74,913.07 : x
  2. Step 2: Convert to fraction form
    108,543.28/162,534.52 = 74,913.07/x
  3. Step 3: Cross multiply
    108,543.28x = 162,534.52 × 74,913.07
  4. Step 4: Simplify right side
    108,543.28x = 12,175,959,280.56
  5. Step 5: Solve for x
    x = 12,175,959,280.56/108,543.28
  6. Step 6: Final answer
    x = 112,176.08

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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.