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Finding the Fourth Proportional to 140,968.60, 211,481.70 and 47,483.80

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Solution

The fourth proportional to 140,968.60, 211,481.70 and 47,483.80 is: 71,235.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,968.60 : 211,481.70 = 47,483.80 : x
  2. Step 2: Convert to fraction form
    140,968.60/211,481.70 = 47,483.80/x
  3. Step 3: Cross multiply
    140,968.60x = 211,481.70 × 47,483.80
  4. Step 4: Simplify right side
    140,968.60x = 10,041,954,746.46
  5. Step 5: Solve for x
    x = 10,041,954,746.46/140,968.60
  6. Step 6: Final answer
    x = 71,235.40

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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.