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Finding the Fourth Proportional to 107,889.53, 161,750.88 and 74,513.16

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Solution

The fourth proportional to 107,889.53, 161,750.88 and 74,513.16 is: 111,712.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,889.53 : 161,750.88 = 74,513.16 : x
  2. Step 2: Convert to fraction form
    107,889.53/161,750.88 = 74,513.16/x
  3. Step 3: Cross multiply
    107,889.53x = 161,750.88 × 74,513.16
  4. Step 4: Simplify right side
    107,889.53x = 12,052,569,201.58
  5. Step 5: Solve for x
    x = 12,052,569,201.58/107,889.53
  6. Step 6: Final answer
    x = 111,712.14

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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.