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Finding the Fourth Proportional to 343,648.12, 474,211.62 and 190,676.61

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Solution

The fourth proportional to 343,648.12, 474,211.62 and 190,676.61 is: 263,121.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,648.12 : 474,211.62 = 190,676.61 : x
  2. Step 2: Convert to fraction form
    343,648.12/474,211.62 = 190,676.61/x
  3. Step 3: Cross multiply
    343,648.12x = 474,211.62 × 190,676.61
  4. Step 4: Simplify right side
    343,648.12x = 90,421,064,356.35
  5. Step 5: Solve for x
    x = 90,421,064,356.35/343,648.12
  6. Step 6: Final answer
    x = 263,121.08

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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.