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Finding the Fourth Proportional to 144,478.72, 216,738.88 and 44,647.68

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Solution

The fourth proportional to 144,478.72, 216,738.88 and 44,647.68 is: 66,977.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,478.72 : 216,738.88 = 44,647.68 : x
  2. Step 2: Convert to fraction form
    144,478.72/216,738.88 = 44,647.68/x
  3. Step 3: Cross multiply
    144,478.72x = 216,738.88 × 44,647.68
  4. Step 4: Simplify right side
    144,478.72x = 9,676,888,157.80
  5. Step 5: Solve for x
    x = 9,676,888,157.80/144,478.72
  6. Step 6: Final answer
    x = 66,977.95

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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.