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Finding the Third Proportional to 74,689.13 and 112,114.69

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Solution

The third proportional to 74,689.13 and 112,114.69 is: 168,293.62

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,689.13 : 112,114.69 = 112,114.69 : x
  2. Step 2: Convert to fraction form
    74,689.13/112,114.69 = 112,114.69/x
  3. Step 3: Cross multiply
    74,689.13x = 112,114.69 × 112,114.69
  4. Step 4: Simplify right side
    74,689.13x = 12,569,703,153.22
  5. Step 5: Solve for x
    x = 12,569,703,153.22/74,689.13
  6. Step 6: Final answer
    x = 168,293.62

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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.