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Finding the Fourth Proportional to 73,690.80, 110,341.80 and 58,009.20

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Solution

The fourth proportional to 73,690.80, 110,341.80 and 58,009.20 is: 86,860.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,690.80 : 110,341.80 = 58,009.20 : x
  2. Step 2: Convert to fraction form
    73,690.80/110,341.80 = 58,009.20/x
  3. Step 3: Cross multiply
    73,690.80x = 110,341.80 × 58,009.20
  4. Step 4: Simplify right side
    73,690.80x = 6,400,839,544.56
  5. Step 5: Solve for x
    x = 6,400,839,544.56/73,690.80
  6. Step 6: Final answer
    x = 86,860.77

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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.