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Finding the Fourth Proportional to 79,262.88, 109,382.64 and 43,454.16

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Solution

The fourth proportional to 79,262.88, 109,382.64 and 43,454.16 is: 59,966.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,262.88 : 109,382.64 = 43,454.16 : x
  2. Step 2: Convert to fraction form
    79,262.88/109,382.64 = 43,454.16/x
  3. Step 3: Cross multiply
    79,262.88x = 109,382.64 × 43,454.16
  4. Step 4: Simplify right side
    79,262.88x = 4,753,130,739.78
  5. Step 5: Solve for x
    x = 4,753,130,739.78/79,262.88
  6. Step 6: Final answer
    x = 59,966.67

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.