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Finding the Fourth Proportional to 316,851.78, 437,255.34 and 173,617.26

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Solution

The fourth proportional to 316,851.78, 437,255.34 and 173,617.26 is: 239,591.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,851.78 : 437,255.34 = 173,617.26 : x
  2. Step 2: Convert to fraction form
    316,851.78/437,255.34 = 173,617.26/x
  3. Step 3: Cross multiply
    316,851.78x = 437,255.34 × 173,617.26
  4. Step 4: Simplify right side
    316,851.78x = 75,915,074,051.17
  5. Step 5: Solve for x
    x = 75,915,074,051.17/316,851.78
  6. Step 6: Final answer
    x = 239,591.76

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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.