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Finding the Fourth Proportional to 107,683.92, 161,130.87 and 89,870.58

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Solution

The fourth proportional to 107,683.92, 161,130.87 and 89,870.58 is: 134,476.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    107,683.92 : 161,130.87 = 89,870.58 : x
  2. Step 2: Convert to fraction form
    107,683.92/161,130.87 = 89,870.58/x
  3. Step 3: Cross multiply
    107,683.92x = 161,130.87 × 89,870.58
  4. Step 4: Simplify right side
    107,683.92x = 14,480,924,742.80
  5. Step 5: Solve for x
    x = 14,480,924,742.80/107,683.92
  6. Step 6: Final answer
    x = 134,476.20

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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.