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Finding the Fourth Proportional to 156,697.92, 216,242.52 and 85,077.92

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Solution

The fourth proportional to 156,697.92, 216,242.52 and 85,077.92 is: 117,407.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,697.92 : 216,242.52 = 85,077.92 : x
  2. Step 2: Convert to fraction form
    156,697.92/216,242.52 = 85,077.92/x
  3. Step 3: Cross multiply
    156,697.92x = 216,242.52 × 85,077.92
  4. Step 4: Simplify right side
    156,697.92x = 18,397,463,817.16
  5. Step 5: Solve for x
    x = 18,397,463,817.16/156,697.92
  6. Step 6: Final answer
    x = 117,407.20

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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.