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Finding the Fourth Proportional to 79,590.40, 109,850.36 and 45,621.66

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Solution

The fourth proportional to 79,590.40, 109,850.36 and 45,621.66 is: 62,966.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    79,590.40 : 109,850.36 = 45,621.66 : x
  2. Step 2: Convert to fraction form
    79,590.40/109,850.36 = 45,621.66/x
  3. Step 3: Cross multiply
    79,590.40x = 109,850.36 × 45,621.66
  4. Step 4: Simplify right side
    79,590.40x = 5,011,555,774.80
  5. Step 5: Solve for x
    x = 5,011,555,774.80/79,590.40
  6. Step 6: Final answer
    x = 62,966.84

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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.