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Finding the Fourth Proportional to 495,980.92, 743,859.60 and 140,987.08

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Solution

The fourth proportional to 495,980.92, 743,859.60 and 140,987.08 is: 211,448.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    495,980.92 : 743,859.60 = 140,987.08 : x
  2. Step 2: Convert to fraction form
    495,980.92/743,859.60 = 140,987.08/x
  3. Step 3: Cross multiply
    495,980.92x = 743,859.60 × 140,987.08
  4. Step 4: Simplify right side
    495,980.92x = 104,874,592,933.97
  5. Step 5: Solve for x
    x = 104,874,592,933.97/495,980.92
  6. Step 6: Final answer
    x = 211,448.85

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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.