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Finding the Fourth Proportional to 82,876.40, 124,314.60 and 27,472.40

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Solution

The fourth proportional to 82,876.40, 124,314.60 and 27,472.40 is: 41,208.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    82,876.40 : 124,314.60 = 27,472.40 : x
  2. Step 2: Convert to fraction form
    82,876.40/124,314.60 = 27,472.40/x
  3. Step 3: Cross multiply
    82,876.40x = 124,314.60 × 27,472.40
  4. Step 4: Simplify right side
    82,876.40x = 3,415,220,417.04
  5. Step 5: Solve for x
    x = 3,415,220,417.04/82,876.40
  6. Step 6: Final answer
    x = 41,208.60

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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.