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Finding the Fourth Proportional to 101,908.12, 152,695.72 and 61,939.33

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Solution

The fourth proportional to 101,908.12, 152,695.72 and 61,939.33 is: 92,807.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    101,908.12 : 152,695.72 = 61,939.33 : x
  2. Step 2: Convert to fraction form
    101,908.12/152,695.72 = 61,939.33/x
  3. Step 3: Cross multiply
    101,908.12x = 152,695.72 × 61,939.33
  4. Step 4: Simplify right side
    101,908.12x = 9,457,870,235.47
  5. Step 5: Solve for x
    x = 9,457,870,235.47/101,908.12
  6. Step 6: Final answer
    x = 92,807.82

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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.