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Finding the Fourth Proportional to 144,655.64, 216,981.40 and 141,081.92

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Solution

The fourth proportional to 144,655.64, 216,981.40 and 141,081.92 is: 211,620.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    144,655.64 : 216,981.40 = 141,081.92 : x
  2. Step 2: Convert to fraction form
    144,655.64/216,981.40 = 141,081.92/x
  3. Step 3: Cross multiply
    144,655.64x = 216,981.40 × 141,081.92
  4. Step 4: Simplify right side
    144,655.64x = 30,612,152,516.29
  5. Step 5: Solve for x
    x = 30,612,152,516.29/144,655.64
  6. Step 6: Final answer
    x = 211,620.87

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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.