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Finding the Fourth Proportional to 156,237.71, 215,606.97 and 84,616.10

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Solution

The fourth proportional to 156,237.71, 215,606.97 and 84,616.10 is: 116,769.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,237.71 : 215,606.97 = 84,616.10 : x
  2. Step 2: Convert to fraction form
    156,237.71/215,606.97 = 84,616.10/x
  3. Step 3: Cross multiply
    156,237.71x = 215,606.97 × 84,616.10
  4. Step 4: Simplify right side
    156,237.71x = 18,243,819,856.18
  5. Step 5: Solve for x
    x = 18,243,819,856.18/156,237.71
  6. Step 6: Final answer
    x = 116,769.63

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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.