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Finding the Fourth Proportional to 91,251.48, 125,923.50 and 57,278.22

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Solution

The fourth proportional to 91,251.48, 125,923.50 and 57,278.22 is: 79,041.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,251.48 : 125,923.50 = 57,278.22 : x
  2. Step 2: Convert to fraction form
    91,251.48/125,923.50 = 57,278.22/x
  3. Step 3: Cross multiply
    91,251.48x = 125,923.50 × 57,278.22
  4. Step 4: Simplify right side
    91,251.48x = 7,212,673,936.17
  5. Step 5: Solve for x
    x = 7,212,673,936.17/91,251.48
  6. Step 6: Final answer
    x = 79,041.72

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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.