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Finding the Fourth Proportional to 82,856.70, 124,285.05 and 32,920.20

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Solution

The fourth proportional to 82,856.70, 124,285.05 and 32,920.20 is: 49,380.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,856.70 : 124,285.05 = 32,920.20 : x
  2. Step 2: Convert to fraction form
    82,856.70/124,285.05 = 32,920.20/x
  3. Step 3: Cross multiply
    82,856.70x = 124,285.05 × 32,920.20
  4. Step 4: Simplify right side
    82,856.70x = 4,091,488,703.01
  5. Step 5: Solve for x
    x = 4,091,488,703.01/82,856.70
  6. Step 6: Final answer
    x = 49,380.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.