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Finding the Fourth Proportional to 66,544.98, 99,904.95 and 61,043.46

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Solution

The fourth proportional to 66,544.98, 99,904.95 and 61,043.46 is: 91,645.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,544.98 : 99,904.95 = 61,043.46 : x
  2. Step 2: Convert to fraction form
    66,544.98/99,904.95 = 61,043.46/x
  3. Step 3: Cross multiply
    66,544.98x = 99,904.95 × 61,043.46
  4. Step 4: Simplify right side
    66,544.98x = 6,098,543,819.13
  5. Step 5: Solve for x
    x = 6,098,543,819.13/66,544.98
  6. Step 6: Final answer
    x = 91,645.44

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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.