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Finding the Fourth Proportional to 66,055.40, 99,080.70 and 26,601.80

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Solution

The fourth proportional to 66,055.40, 99,080.70 and 26,601.80 is: 39,901.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,055.40 : 99,080.70 = 26,601.80 : x
  2. Step 2: Convert to fraction form
    66,055.40/99,080.70 = 26,601.80/x
  3. Step 3: Cross multiply
    66,055.40x = 99,080.70 × 26,601.80
  4. Step 4: Simplify right side
    66,055.40x = 2,635,724,965.26
  5. Step 5: Solve for x
    x = 2,635,724,965.26/66,055.40
  6. Step 6: Final answer
    x = 39,901.73

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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.