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Finding the Fourth Proportional to 121,010.20, 181,169.70 and 117,554.20

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Solution

The fourth proportional to 121,010.20, 181,169.70 and 117,554.20 is: 175,995.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    121,010.20 : 181,169.70 = 117,554.20 : x
  2. Step 2: Convert to fraction form
    121,010.20/181,169.70 = 117,554.20/x
  3. Step 3: Cross multiply
    121,010.20x = 181,169.70 × 117,554.20
  4. Step 4: Simplify right side
    121,010.20x = 21,297,259,147.74
  5. Step 5: Solve for x
    x = 21,297,259,147.74/121,010.20
  6. Step 6: Final answer
    x = 175,995.57

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1.5x scale

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.