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Finding the Fourth Proportional to 99,785.60, 149,699.20 and 33,246.40

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Solution

The fourth proportional to 99,785.60, 149,699.20 and 33,246.40 is: 49,876.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,785.60 : 149,699.20 = 33,246.40 : x
  2. Step 2: Convert to fraction form
    99,785.60/149,699.20 = 33,246.40/x
  3. Step 3: Cross multiply
    99,785.60x = 149,699.20 × 33,246.40
  4. Step 4: Simplify right side
    99,785.60x = 4,976,959,482.88
  5. Step 5: Solve for x
    x = 4,976,959,482.88/99,785.60
  6. Step 6: Final answer
    x = 49,876.53

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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.