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Finding the Fourth Proportional to 313,034.09, 431,987.05 and 177,065.11

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Solution

The fourth proportional to 313,034.09, 431,987.05 and 177,065.11 is: 244,349.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    313,034.09 : 431,987.05 = 177,065.11 : x
  2. Step 2: Convert to fraction form
    313,034.09/431,987.05 = 177,065.11/x
  3. Step 3: Cross multiply
    313,034.09x = 431,987.05 × 177,065.11
  4. Step 4: Simplify right side
    313,034.09x = 76,489,834,526.83
  5. Step 5: Solve for x
    x = 76,489,834,526.83/313,034.09
  6. Step 6: Final answer
    x = 244,349.86

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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.