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Finding the Fourth Proportional to 136,169.59, 187,911.33 and 75,738.93

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Solution

The fourth proportional to 136,169.59, 187,911.33 and 75,738.93 is: 104,518.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    136,169.59 : 187,911.33 = 75,738.93 : x
  2. Step 2: Convert to fraction form
    136,169.59/187,911.33 = 75,738.93/x
  3. Step 3: Cross multiply
    136,169.59x = 187,911.33 × 75,738.93
  4. Step 4: Simplify right side
    136,169.59x = 14,232,203,069.08
  5. Step 5: Solve for x
    x = 14,232,203,069.08/136,169.59
  6. Step 6: Final answer
    x = 104,518.22

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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.