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Finding the Fourth Proportional to 49,990.80, 74,864.70 and 26,565.60

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Solution

The fourth proportional to 49,990.80, 74,864.70 and 26,565.60 is: 39,783.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,990.80 : 74,864.70 = 26,565.60 : x
  2. Step 2: Convert to fraction form
    49,990.80/74,864.70 = 26,565.60/x
  3. Step 3: Cross multiply
    49,990.80x = 74,864.70 × 26,565.60
  4. Step 4: Simplify right side
    49,990.80x = 1,988,825,674.32
  5. Step 5: Solve for x
    x = 1,988,825,674.32/49,990.80
  6. Step 6: Final answer
    x = 39,783.83

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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.