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Finding the Fourth Proportional to 245,725.80, 368,442.90 and 127,627.80

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Solution

The fourth proportional to 245,725.80, 368,442.90 and 127,627.80 is: 191,365.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    245,725.80 : 368,442.90 = 127,627.80 : x
  2. Step 2: Convert to fraction form
    245,725.80/368,442.90 = 127,627.80/x
  3. Step 3: Cross multiply
    245,725.80x = 368,442.90 × 127,627.80
  4. Step 4: Simplify right side
    245,725.80x = 47,023,556,752.62
  5. Step 5: Solve for x
    x = 47,023,556,752.62/245,725.80
  6. Step 6: Final answer
    x = 191,365.97

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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.