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Finding the Fourth Proportional to 73,018.77, 100,765.89 and 39,484.77

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Solution

The fourth proportional to 73,018.77, 100,765.89 and 39,484.77 is: 54,488.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,018.77 : 100,765.89 = 39,484.77 : x
  2. Step 2: Convert to fraction form
    73,018.77/100,765.89 = 39,484.77/x
  3. Step 3: Cross multiply
    73,018.77x = 100,765.89 × 39,484.77
  4. Step 4: Simplify right side
    73,018.77x = 3,978,717,612.62
  5. Step 5: Solve for x
    x = 3,978,717,612.62/73,018.77
  6. Step 6: Final answer
    x = 54,488.97

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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.