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Finding the Fourth Proportional to 458,535.26, 687,821.54 and 116,987.56

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Solution

The fourth proportional to 458,535.26, 687,821.54 and 116,987.56 is: 175,486.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    458,535.26 : 687,821.54 = 116,987.56 : x
  2. Step 2: Convert to fraction form
    458,535.26/687,821.54 = 116,987.56/x
  3. Step 3: Cross multiply
    458,535.26x = 687,821.54 × 116,987.56
  4. Step 4: Simplify right side
    458,535.26x = 80,466,562,033.61
  5. Step 5: Solve for x
    x = 80,466,562,033.61/458,535.26
  6. Step 6: Final answer
    x = 175,486.09

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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.