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Finding the Fourth Proportional to 261,202.60, 391,803.90 and 83,836.90

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Solution

The fourth proportional to 261,202.60, 391,803.90 and 83,836.90 is: 125,755.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    261,202.60 : 391,803.90 = 83,836.90 : x
  2. Step 2: Convert to fraction form
    261,202.60/391,803.90 = 83,836.90/x
  3. Step 3: Cross multiply
    261,202.60x = 391,803.90 × 83,836.90
  4. Step 4: Simplify right side
    261,202.60x = 32,847,624,383.91
  5. Step 5: Solve for x
    x = 32,847,624,383.91/261,202.60
  6. Step 6: Final answer
    x = 125,755.35

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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.