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Finding the Fourth Proportional to 89,362.92, 123,320.94 and 49,079.28

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Solution

The fourth proportional to 89,362.92, 123,320.94 and 49,079.28 is: 67,729.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,362.92 : 123,320.94 = 49,079.28 : x
  2. Step 2: Convert to fraction form
    89,362.92/123,320.94 = 49,079.28/x
  3. Step 3: Cross multiply
    89,362.92x = 123,320.94 × 49,079.28
  4. Step 4: Simplify right side
    89,362.92x = 6,052,502,944.12
  5. Step 5: Solve for x
    x = 6,052,502,944.12/89,362.92
  6. Step 6: Final answer
    x = 67,729.47

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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.