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Finding the Fourth Proportional to 75,632.60, 113,448.90 and 69,930.20

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Solution

The fourth proportional to 75,632.60, 113,448.90 and 69,930.20 is: 104,895.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,632.60 : 113,448.90 = 69,930.20 : x
  2. Step 2: Convert to fraction form
    75,632.60/113,448.90 = 69,930.20/x
  3. Step 3: Cross multiply
    75,632.60x = 113,448.90 × 69,930.20
  4. Step 4: Simplify right side
    75,632.60x = 7,933,504,266.78
  5. Step 5: Solve for x
    x = 7,933,504,266.78/75,632.60
  6. Step 6: Final answer
    x = 104,895.30

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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.