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Finding the Fourth Proportional to 209,041.80, 288,478.80 and 113,549.28

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Solution

The fourth proportional to 209,041.80, 288,478.80 and 113,549.28 is: 156,698.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    209,041.80 : 288,478.80 = 113,549.28 : x
  2. Step 2: Convert to fraction form
    209,041.80/288,478.80 = 113,549.28/x
  3. Step 3: Cross multiply
    209,041.80x = 288,478.80 × 113,549.28
  4. Step 4: Simplify right side
    209,041.80x = 32,756,560,035.26
  5. Step 5: Solve for x
    x = 32,756,560,035.26/209,041.80
  6. Step 6: Final answer
    x = 156,698.61

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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.