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Finding the Fourth Proportional to 66,391.68, 99,582.06 and 22,003.92

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Solution

The fourth proportional to 66,391.68, 99,582.06 and 22,003.92 is: 33,004.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,391.68 : 99,582.06 = 22,003.92 : x
  2. Step 2: Convert to fraction form
    66,391.68/99,582.06 = 22,003.92/x
  3. Step 3: Cross multiply
    66,391.68x = 99,582.06 × 22,003.92
  4. Step 4: Simplify right side
    66,391.68x = 2,191,195,681.68
  5. Step 5: Solve for x
    x = 2,191,195,681.68/66,391.68
  6. Step 6: Final answer
    x = 33,004.07

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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.