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Finding the Fourth Proportional to 140,746.60, 210,940.70 and 57,546.60

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Solution

The fourth proportional to 140,746.60, 210,940.70 and 57,546.60 is: 86,246.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,746.60 : 210,940.70 = 57,546.60 : x
  2. Step 2: Convert to fraction form
    140,746.60/210,940.70 = 57,546.60/x
  3. Step 3: Cross multiply
    140,746.60x = 210,940.70 × 57,546.60
  4. Step 4: Simplify right side
    140,746.60x = 12,138,920,086.62
  5. Step 5: Solve for x
    x = 12,138,920,086.62/140,746.60
  6. Step 6: Final answer
    x = 86,246.63

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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.