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Finding the Fourth Proportional to 110,915.34, 153,069.39 and 73,162.86

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Solution

The fourth proportional to 110,915.34, 153,069.39 and 73,162.86 is: 100,968.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    110,915.34 : 153,069.39 = 73,162.86 : x
  2. Step 2: Convert to fraction form
    110,915.34/153,069.39 = 73,162.86/x
  3. Step 3: Cross multiply
    110,915.34x = 153,069.39 × 73,162.86
  4. Step 4: Simplify right side
    110,915.34x = 11,198,994,350.86
  5. Step 5: Solve for x
    x = 11,198,994,350.86/110,915.34
  6. Step 6: Final answer
    x = 100,968.85

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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.