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Finding the Fourth Proportional to 116,695.80, 161,038.92 and 68,948.16

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Solution

The fourth proportional to 116,695.80, 161,038.92 and 68,948.16 is: 95,147.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,695.80 : 161,038.92 = 68,948.16 : x
  2. Step 2: Convert to fraction form
    116,695.80/161,038.92 = 68,948.16/x
  3. Step 3: Cross multiply
    116,695.80x = 161,038.92 × 68,948.16
  4. Step 4: Simplify right side
    116,695.80x = 11,103,337,222.39
  5. Step 5: Solve for x
    x = 11,103,337,222.39/116,695.80
  6. Step 6: Final answer
    x = 95,147.70

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1.5x scale

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.