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Finding the Fourth Proportional to 108,473.40, 162,685.80 and 71,294.40

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Solution

The fourth proportional to 108,473.40, 162,685.80 and 71,294.40 is: 106,925.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,473.40 : 162,685.80 = 71,294.40 : x
  2. Step 2: Convert to fraction form
    108,473.40/162,685.80 = 71,294.40/x
  3. Step 3: Cross multiply
    108,473.40x = 162,685.80 × 71,294.40
  4. Step 4: Simplify right side
    108,473.40x = 11,598,586,499.52
  5. Step 5: Solve for x
    x = 11,598,586,499.52/108,473.40
  6. Step 6: Final answer
    x = 106,925.63

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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.