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Finding the Fourth Proportional to 78,794.40, 108,776.48 and 60,849.12

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Solution

The fourth proportional to 78,794.40, 108,776.48 and 60,849.12 is: 84,002.84

Step by Step Solution

  1. Step 1: Write the proportion equation
    78,794.40 : 108,776.48 = 60,849.12 : x
  2. Step 2: Convert to fraction form
    78,794.40/108,776.48 = 60,849.12/x
  3. Step 3: Cross multiply
    78,794.40x = 108,776.48 × 60,849.12
  4. Step 4: Simplify right side
    78,794.40x = 6,618,953,084.70
  5. Step 5: Solve for x
    x = 6,618,953,084.70/78,794.40
  6. Step 6: Final answer
    x = 84,002.84

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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.