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Finding the Fourth Proportional to 116,687.96, 161,031.44 and 68,941.20

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Solution

The fourth proportional to 116,687.96, 161,031.44 and 68,941.20 is: 95,140.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    116,687.96 : 161,031.44 = 68,941.20 : x
  2. Step 2: Convert to fraction form
    116,687.96/161,031.44 = 68,941.20/x
  3. Step 3: Cross multiply
    116,687.96x = 161,031.44 × 68,941.20
  4. Step 4: Simplify right side
    116,687.96x = 11,101,700,366.62
  5. Step 5: Solve for x
    x = 11,101,700,366.62/116,687.96
  6. Step 6: Final answer
    x = 95,140.07

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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.