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Finding the Fourth Proportional to 60,809.60, 91,287.30 and 34,176.80

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Solution

The fourth proportional to 60,809.60, 91,287.30 and 34,176.80 is: 51,306.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,809.60 : 91,287.30 = 34,176.80 : x
  2. Step 2: Convert to fraction form
    60,809.60/91,287.30 = 34,176.80/x
  3. Step 3: Cross multiply
    60,809.60x = 91,287.30 × 34,176.80
  4. Step 4: Simplify right side
    60,809.60x = 3,119,907,794.64
  5. Step 5: Solve for x
    x = 3,119,907,794.64/60,809.60
  6. Step 6: Final answer
    x = 51,306.17

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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.