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Finding the Fourth Proportional to 83,276.70, 124,915.05 and 36,620.70

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Solution

The fourth proportional to 83,276.70, 124,915.05 and 36,620.70 is: 54,931.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,276.70 : 124,915.05 = 36,620.70 : x
  2. Step 2: Convert to fraction form
    83,276.70/124,915.05 = 36,620.70/x
  3. Step 3: Cross multiply
    83,276.70x = 124,915.05 × 36,620.70
  4. Step 4: Simplify right side
    83,276.70x = 4,574,476,571.54
  5. Step 5: Solve for x
    x = 4,574,476,571.54/83,276.70
  6. Step 6: Final answer
    x = 54,931.05

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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.