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Finding the Fourth Proportional to 156,280.66, 215,667.11 and 84,660.98

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Solution

The fourth proportional to 156,280.66, 215,667.11 and 84,660.98 is: 116,832.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    156,280.66 : 215,667.11 = 84,660.98 : x
  2. Step 2: Convert to fraction form
    156,280.66/215,667.11 = 84,660.98/x
  3. Step 3: Cross multiply
    156,280.66x = 215,667.11 × 84,660.98
  4. Step 4: Simplify right side
    156,280.66x = 18,258,588,019.68
  5. Step 5: Solve for x
    x = 18,258,588,019.68/156,280.66
  6. Step 6: Final answer
    x = 116,832.04

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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.