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Finding the Fourth Proportional to 66,915.66, 100,356.69 and 27,483.66

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Solution

The fourth proportional to 66,915.66, 100,356.69 and 27,483.66 is: 41,218.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,915.66 : 100,356.69 = 27,483.66 : x
  2. Step 2: Convert to fraction form
    66,915.66/100,356.69 = 27,483.66/x
  3. Step 3: Cross multiply
    66,915.66x = 100,356.69 × 27,483.66
  4. Step 4: Simplify right side
    66,915.66x = 2,758,169,146.69
  5. Step 5: Solve for x
    x = 2,758,169,146.69/66,915.66
  6. Step 6: Final answer
    x = 41,218.59

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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.