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Finding the Fourth Proportional to 58,620.86, 87,839.08 and 45,326.34

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Solution

The fourth proportional to 58,620.86, 87,839.08 and 45,326.34 is: 67,918.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    58,620.86 : 87,839.08 = 45,326.34 : x
  2. Step 2: Convert to fraction form
    58,620.86/87,839.08 = 45,326.34/x
  3. Step 3: Cross multiply
    58,620.86x = 87,839.08 × 45,326.34
  4. Step 4: Simplify right side
    58,620.86x = 3,981,424,005.37
  5. Step 5: Solve for x
    x = 3,981,424,005.37/58,620.86
  6. Step 6: Final answer
    x = 67,918.21

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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.