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Finding the Fourth Proportional to 140,465.47, 210,675.09 and 60,481.87

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Solution

The fourth proportional to 140,465.47, 210,675.09 and 60,481.87 is: 90,712.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    140,465.47 : 210,675.09 = 60,481.87 : x
  2. Step 2: Convert to fraction form
    140,465.47/210,675.09 = 60,481.87/x
  3. Step 3: Cross multiply
    140,465.47x = 210,675.09 × 60,481.87
  4. Step 4: Simplify right side
    140,465.47x = 12,742,023,405.62
  5. Step 5: Solve for x
    x = 12,742,023,405.62/140,465.47
  6. Step 6: Final answer
    x = 90,712.85

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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.