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Finding the Fourth Proportional to 83,079.72, 124,671.60 and 33,152.40

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Solution

The fourth proportional to 83,079.72, 124,671.60 and 33,152.40 is: 49,749.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,079.72 : 124,671.60 = 33,152.40 : x
  2. Step 2: Convert to fraction form
    83,079.72/124,671.60 = 33,152.40/x
  3. Step 3: Cross multiply
    83,079.72x = 124,671.60 × 33,152.40
  4. Step 4: Simplify right side
    83,079.72x = 4,133,162,751.84
  5. Step 5: Solve for x
    x = 4,133,162,751.84/83,079.72
  6. Step 6: Final answer
    x = 49,749.36

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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.