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Finding the Fourth Proportional to 50,718.92, 69,995.54 and 28,363.08

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Solution

The fourth proportional to 50,718.92, 69,995.54 and 28,363.08 is: 39,142.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    50,718.92 : 69,995.54 = 28,363.08 : x
  2. Step 2: Convert to fraction form
    50,718.92/69,995.54 = 28,363.08/x
  3. Step 3: Cross multiply
    50,718.92x = 69,995.54 × 28,363.08
  4. Step 4: Simplify right side
    50,718.92x = 1,985,289,100.66
  5. Step 5: Solve for x
    x = 1,985,289,100.66/50,718.92
  6. Step 6: Final answer
    x = 39,142.97

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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.