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Finding the Fourth Proportional to 66,470.24, 99,724.20 and 27,055.64

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Solution

The fourth proportional to 66,470.24, 99,724.20 and 27,055.64 is: 40,591.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,470.24 : 99,724.20 = 27,055.64 : x
  2. Step 2: Convert to fraction form
    66,470.24/99,724.20 = 27,055.64/x
  3. Step 3: Cross multiply
    66,470.24x = 99,724.20 × 27,055.64
  4. Step 4: Simplify right side
    66,470.24x = 2,698,102,054.49
  5. Step 5: Solve for x
    x = 2,698,102,054.49/66,470.24
  6. Step 6: Final answer
    x = 40,591.13

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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.