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Finding the Fourth Proportional to 91,478.20, 126,197.20 and 59,223.20

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Solution

The fourth proportional to 91,478.20, 126,197.20 and 59,223.20 is: 81,700.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,478.20 : 126,197.20 = 59,223.20 : x
  2. Step 2: Convert to fraction form
    91,478.20/126,197.20 = 59,223.20/x
  3. Step 3: Cross multiply
    91,478.20x = 126,197.20 × 59,223.20
  4. Step 4: Simplify right side
    91,478.20x = 7,473,802,015.04
  5. Step 5: Solve for x
    x = 7,473,802,015.04/91,478.20
  6. Step 6: Final answer
    x = 81,700.36

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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.