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Finding the Fourth Proportional to 75,571.80, 113,325.30 and 38,117.40

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Solution

The fourth proportional to 75,571.80, 113,325.30 and 38,117.40 is: 57,159.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    75,571.80 : 113,325.30 = 38,117.40 : x
  2. Step 2: Convert to fraction form
    75,571.80/113,325.30 = 38,117.40/x
  3. Step 3: Cross multiply
    75,571.80x = 113,325.30 × 38,117.40
  4. Step 4: Simplify right side
    75,571.80x = 4,319,665,790.22
  5. Step 5: Solve for x
    x = 4,319,665,790.22/75,571.80
  6. Step 6: Final answer
    x = 57,159.76

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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.