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Finding the Fourth Proportional to 137,211.60, 192,649.20 and 137,211.60

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Solution

The fourth proportional to 137,211.60, 192,649.20 and 137,211.60 is: 192,649.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,211.60 : 192,649.20 = 137,211.60 : x
  2. Step 2: Convert to fraction form
    137,211.60/192,649.20 = 137,211.60/x
  3. Step 3: Cross multiply
    137,211.60x = 192,649.20 × 137,211.60
  4. Step 4: Simplify right side
    137,211.60x = 26,433,704,970.72
  5. Step 5: Solve for x
    x = 26,433,704,970.72/137,211.60
  6. Step 6: Final answer
    x = 192,649.20

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.