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Finding the Fourth Proportional to 83,432.80, 117,039.20 and 83,432.80

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Solution

The fourth proportional to 83,432.80, 117,039.20 and 83,432.80 is: 117,039.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,432.80 : 117,039.20 = 83,432.80 : x
  2. Step 2: Convert to fraction form
    83,432.80/117,039.20 = 83,432.80/x
  3. Step 3: Cross multiply
    83,432.80x = 117,039.20 × 83,432.80
  4. Step 4: Simplify right side
    83,432.80x = 9,764,908,165.76
  5. Step 5: Solve for x
    x = 9,764,908,165.76/83,432.80
  6. Step 6: Final answer
    x = 117,039.20

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.