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Finding the Fourth Proportional to 108,878.76, 163,381.62 and 45,693.54

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Solution

The fourth proportional to 108,878.76, 163,381.62 and 45,693.54 is: 68,566.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    108,878.76 : 163,381.62 = 45,693.54 : x
  2. Step 2: Convert to fraction form
    108,878.76/163,381.62 = 45,693.54/x
  3. Step 3: Cross multiply
    108,878.76x = 163,381.62 × 45,693.54
  4. Step 4: Simplify right side
    108,878.76x = 7,465,484,588.73
  5. Step 5: Solve for x
    x = 7,465,484,588.73/108,878.76
  6. Step 6: Final answer
    x = 68,566.95

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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.