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Finding the Fourth Proportional to 247,391.77, 341,432.85 and 138,537.57

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Solution

The fourth proportional to 247,391.77, 341,432.85 and 138,537.57 is: 191,199.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    247,391.77 : 341,432.85 = 138,537.57 : x
  2. Step 2: Convert to fraction form
    247,391.77/341,432.85 = 138,537.57/x
  3. Step 3: Cross multiply
    247,391.77x = 341,432.85 × 138,537.57
  4. Step 4: Simplify right side
    247,391.77x = 47,301,275,107.31
  5. Step 5: Solve for x
    x = 47,301,275,107.31/247,391.77
  6. Step 6: Final answer
    x = 191,199.87

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.