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Finding the Fourth Proportional to 209,019.68, 288,449.24 and 113,528.24

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Solution

The fourth proportional to 209,019.68, 288,449.24 and 113,528.24 is: 156,670.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,019.68 : 288,449.24 = 113,528.24 : x
  2. Step 2: Convert to fraction form
    209,019.68/288,449.24 = 113,528.24/x
  3. Step 3: Cross multiply
    209,019.68x = 288,449.24 × 113,528.24
  4. Step 4: Simplify right side
    209,019.68x = 32,747,134,546.54
  5. Step 5: Solve for x
    x = 32,747,134,546.54/209,019.68
  6. Step 6: Final answer
    x = 156,670.10

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.