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Finding the Fourth Proportional to 173,154.48, 238,912.56 and 105,169.56

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Solution

The fourth proportional to 173,154.48, 238,912.56 and 105,169.56 is: 145,109.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    173,154.48 : 238,912.56 = 105,169.56 : x
  2. Step 2: Convert to fraction form
    173,154.48/238,912.56 = 105,169.56/x
  3. Step 3: Cross multiply
    173,154.48x = 238,912.56 × 105,169.56
  4. Step 4: Simplify right side
    173,154.48x = 25,126,328,813.67
  5. Step 5: Solve for x
    x = 25,126,328,813.67/173,154.48
  6. Step 6: Final answer
    x = 145,109.32

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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.