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Finding the Fourth Proportional to 113,897.20, 170,975.40 and 67,176.40

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Solution

The fourth proportional to 113,897.20, 170,975.40 and 67,176.40 is: 100,841.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,897.20 : 170,975.40 = 67,176.40 : x
  2. Step 2: Convert to fraction form
    113,897.20/170,975.40 = 67,176.40/x
  3. Step 3: Cross multiply
    113,897.20x = 170,975.40 × 67,176.40
  4. Step 4: Simplify right side
    113,897.20x = 11,485,511,860.56
  5. Step 5: Solve for x
    x = 11,485,511,860.56/113,897.20
  6. Step 6: Final answer
    x = 100,841.04

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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.