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Finding the Fourth Proportional to 91,130.80, 136,696.20 and 41,882.80

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Solution

The fourth proportional to 91,130.80, 136,696.20 and 41,882.80 is: 62,824.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    91,130.80 : 136,696.20 = 41,882.80 : x
  2. Step 2: Convert to fraction form
    91,130.80/136,696.20 = 41,882.80/x
  3. Step 3: Cross multiply
    91,130.80x = 136,696.20 × 41,882.80
  4. Step 4: Simplify right side
    91,130.80x = 5,725,219,605.36
  5. Step 5: Solve for x
    x = 5,725,219,605.36/91,130.80
  6. Step 6: Final answer
    x = 62,824.20

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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.