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Finding the Fourth Proportional to 156,873.57, 216,486.90 and 85,253.59

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Solution

The fourth proportional to 156,873.57, 216,486.90 and 85,253.59 is: 117,650.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,873.57 : 216,486.90 = 85,253.59 : x
  2. Step 2: Convert to fraction form
    156,873.57/216,486.90 = 85,253.59/x
  3. Step 3: Cross multiply
    156,873.57x = 216,486.90 × 85,253.59
  4. Step 4: Simplify right side
    156,873.57x = 18,456,285,412.97
  5. Step 5: Solve for x
    x = 18,456,285,412.97/156,873.57
  6. Step 6: Final answer
    x = 117,650.70

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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.