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Finding the Fourth Proportional to 73,005.15, 100,747.09 and 39,471.15

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Solution

The fourth proportional to 73,005.15, 100,747.09 and 39,471.15 is: 54,470.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,005.15 : 100,747.09 = 39,471.15 : x
  2. Step 2: Convert to fraction form
    73,005.15/100,747.09 = 39,471.15/x
  3. Step 3: Cross multiply
    73,005.15x = 100,747.09 × 39,471.15
  4. Step 4: Simplify right side
    73,005.15x = 3,976,603,501.45
  5. Step 5: Solve for x
    x = 3,976,603,501.45/73,005.15
  6. Step 6: Final answer
    x = 54,470.18

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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.