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Finding the Fourth Proportional to 91,127.48, 136,697.76 and 27,939.40

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Solution

The fourth proportional to 91,127.48, 136,697.76 and 27,939.40 is: 41,911.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,127.48 : 136,697.76 = 27,939.40 : x
  2. Step 2: Convert to fraction form
    91,127.48/136,697.76 = 27,939.40/x
  3. Step 3: Cross multiply
    91,127.48x = 136,697.76 × 27,939.40
  4. Step 4: Simplify right side
    91,127.48x = 3,819,253,395.74
  5. Step 5: Solve for x
    x = 3,819,253,395.74/91,127.48
  6. Step 6: Final answer
    x = 41,911.11

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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.