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Finding the Fourth Proportional to 144,378.88, 216,541.92 and 65,474.08

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Solution

The fourth proportional to 144,378.88, 216,541.92 and 65,474.08 is: 98,199.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,378.88 : 216,541.92 = 65,474.08 : x
  2. Step 2: Convert to fraction form
    144,378.88/216,541.92 = 65,474.08/x
  3. Step 3: Cross multiply
    144,378.88x = 216,541.92 × 65,474.08
  4. Step 4: Simplify right side
    144,378.88x = 14,177,882,993.43
  5. Step 5: Solve for x
    x = 14,177,882,993.43/144,378.88
  6. Step 6: Final answer
    x = 98,199.15

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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.