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Finding the Fourth Proportional to 25,346.90, 34,979.64 and 14,016.90

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Solution

The fourth proportional to 25,346.90, 34,979.64 and 14,016.90 is: 19,343.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,346.90 : 34,979.64 = 14,016.90 : x
  2. Step 2: Convert to fraction form
    25,346.90/34,979.64 = 14,016.90/x
  3. Step 3: Cross multiply
    25,346.90x = 34,979.64 × 14,016.90
  4. Step 4: Simplify right side
    25,346.90x = 490,306,115.92
  5. Step 5: Solve for x
    x = 490,306,115.92/25,346.90
  6. Step 6: Final answer
    x = 19,343.83

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.