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Finding the Fourth Proportional to 156,616.96, 216,127.68 and 84,993.92

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Solution

The fourth proportional to 156,616.96, 216,127.68 and 84,993.92 is: 117,289.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,616.96 : 216,127.68 = 84,993.92 : x
  2. Step 2: Convert to fraction form
    156,616.96/216,127.68 = 84,993.92/x
  3. Step 3: Cross multiply
    156,616.96x = 216,127.68 × 84,993.92
  4. Step 4: Simplify right side
    156,616.96x = 18,369,538,743.71
  5. Step 5: Solve for x
    x = 18,369,538,743.71/156,616.96
  6. Step 6: Final answer
    x = 117,289.59

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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.