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Finding the Fourth Proportional to 74,788.65, 102,998.39 and 73,155.69

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Solution

The fourth proportional to 74,788.65, 102,998.39 and 73,155.69 is: 100,749.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,788.65 : 102,998.39 = 73,155.69 : x
  2. Step 2: Convert to fraction form
    74,788.65/102,998.39 = 73,155.69/x
  3. Step 3: Cross multiply
    74,788.65x = 102,998.39 × 73,155.69
  4. Step 4: Simplify right side
    74,788.65x = 7,534,917,923.56
  5. Step 5: Solve for x
    x = 7,534,917,923.56/74,788.65
  6. Step 6: Final answer
    x = 100,749.48

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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.