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Finding the Fourth Proportional to 170,074.61, 255,169.33 and 75,291.72

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Solution

The fourth proportional to 170,074.61, 255,169.33 and 75,291.72 is: 112,962.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    170,074.61 : 255,169.33 = 75,291.72 : x
  2. Step 2: Convert to fraction form
    170,074.61/255,169.33 = 75,291.72/x
  3. Step 3: Cross multiply
    170,074.61x = 255,169.33 × 75,291.72
  4. Step 4: Simplify right side
    170,074.61x = 19,212,137,558.72
  5. Step 5: Solve for x
    x = 19,212,137,558.72/170,074.61
  6. Step 6: Final answer
    x = 112,962.99

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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.