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Finding the Fourth Proportional to 91,508.64, 126,263.96 and 57,497.42

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Solution

The fourth proportional to 91,508.64, 126,263.96 and 57,497.42 is: 79,335.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,508.64 : 126,263.96 = 57,497.42 : x
  2. Step 2: Convert to fraction form
    91,508.64/126,263.96 = 57,497.42/x
  3. Step 3: Cross multiply
    91,508.64x = 126,263.96 × 57,497.42
  4. Step 4: Simplify right side
    91,508.64x = 7,259,851,938.98
  5. Step 5: Solve for x
    x = 7,259,851,938.98/91,508.64
  6. Step 6: Final answer
    x = 79,335.15

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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.