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Finding the Fourth Proportional to 113,730.40, 170,336.40 and 67,074.40

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Solution

The fourth proportional to 113,730.40, 170,336.40 and 67,074.40 is: 100,458.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    113,730.40 : 170,336.40 = 67,074.40 : x
  2. Step 2: Convert to fraction form
    113,730.40/170,336.40 = 67,074.40/x
  3. Step 3: Cross multiply
    113,730.40x = 170,336.40 × 67,074.40
  4. Step 4: Simplify right side
    113,730.40x = 11,425,211,828.16
  5. Step 5: Solve for x
    x = 11,425,211,828.16/113,730.40
  6. Step 6: Final answer
    x = 100,458.73

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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.