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Finding the Fourth Proportional to 108,575.40, 163,008.90 and 69,306.60

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Solution

The fourth proportional to 108,575.40, 163,008.90 and 69,306.60 is: 104,052.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,575.40 : 163,008.90 = 69,306.60 : x
  2. Step 2: Convert to fraction form
    108,575.40/163,008.90 = 69,306.60/x
  3. Step 3: Cross multiply
    108,575.40x = 163,008.90 × 69,306.60
  4. Step 4: Simplify right side
    108,575.40x = 11,297,592,628.74
  5. Step 5: Solve for x
    x = 11,297,592,628.74/108,575.40
  6. Step 6: Final answer
    x = 104,052.97

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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.