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Finding the Fourth Proportional to 119,916.17, 165,479.96 and 66,200.03

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Solution

The fourth proportional to 119,916.17, 165,479.96 and 66,200.03 is: 91,353.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    119,916.17 : 165,479.96 = 66,200.03 : x
  2. Step 2: Convert to fraction form
    119,916.17/165,479.96 = 66,200.03/x
  3. Step 3: Cross multiply
    119,916.17x = 165,479.96 × 66,200.03
  4. Step 4: Simplify right side
    119,916.17x = 10,954,778,316.40
  5. Step 5: Solve for x
    x = 10,954,778,316.40/119,916.17
  6. Step 6: Final answer
    x = 91,353.64

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.