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Finding the Fourth Proportional to 340,993.03, 511,212.16 and 127,641.45

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Solution

The fourth proportional to 340,993.03, 511,212.16 and 127,641.45 is: 191,358.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    340,993.03 : 511,212.16 = 127,641.45 : x
  2. Step 2: Convert to fraction form
    340,993.03/511,212.16 = 127,641.45/x
  3. Step 3: Cross multiply
    340,993.03x = 511,212.16 × 127,641.45
  4. Step 4: Simplify right side
    340,993.03x = 65,251,859,123.28
  5. Step 5: Solve for x
    x = 65,251,859,123.28/340,993.03
  6. Step 6: Final answer
    x = 191,358.33

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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.