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Finding the Fourth Proportional to 70,199.93, 105,299.76 and 16,891.88

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Solution

The fourth proportional to 70,199.93, 105,299.76 and 16,891.88 is: 25,337.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,199.93 : 105,299.76 = 16,891.88 : x
  2. Step 2: Convert to fraction form
    70,199.93/105,299.76 = 16,891.88/x
  3. Step 3: Cross multiply
    70,199.93x = 105,299.76 × 16,891.88
  4. Step 4: Simplify right side
    70,199.93x = 1,778,710,446.79
  5. Step 5: Solve for x
    x = 1,778,710,446.79/70,199.93
  6. Step 6: Final answer
    x = 25,337.78

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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.