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Finding the Fourth Proportional to 91,778.98, 137,666.84 and 25,218.84

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Solution

The fourth proportional to 91,778.98, 137,666.84 and 25,218.84 is: 37,827.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,778.98 : 137,666.84 = 25,218.84 : x
  2. Step 2: Convert to fraction form
    91,778.98/137,666.84 = 25,218.84/x
  3. Step 3: Cross multiply
    91,778.98x = 137,666.84 × 25,218.84
  4. Step 4: Simplify right side
    91,778.98x = 3,471,798,011.27
  5. Step 5: Solve for x
    x = 3,471,798,011.27/91,778.98
  6. Step 6: Final answer
    x = 37,827.81

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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.