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Finding the Fourth Proportional to 236,520.60, 354,780.90 and 86,711.10

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Solution

The fourth proportional to 236,520.60, 354,780.90 and 86,711.10 is: 130,066.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    236,520.60 : 354,780.90 = 86,711.10 : x
  2. Step 2: Convert to fraction form
    236,520.60/354,780.90 = 86,711.10/x
  3. Step 3: Cross multiply
    236,520.60x = 354,780.90 × 86,711.10
  4. Step 4: Simplify right side
    236,520.60x = 30,763,442,097.99
  5. Step 5: Solve for x
    x = 30,763,442,097.99/236,520.60
  6. Step 6: Final answer
    x = 130,066.65

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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.