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Finding the Fourth Proportional to 113,190, 169,526.46 and 54,067.50

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Solution

The fourth proportional to 113,190, 169,526.46 and 54,067.50 is: 80,977.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,190 : 169,526.46 = 54,067.50 : x
  2. Step 2: Convert to fraction form
    113,190/169,526.46 = 54,067.50/x
  3. Step 3: Cross multiply
    113,190x = 169,526.46 × 54,067.50
  4. Step 4: Simplify right side
    113,190x = 9,165,871,876.05
  5. Step 5: Solve for x
    x = 9,165,871,876.05/113,190
  6. Step 6: Final answer
    x = 80,977.75

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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.