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Finding the Fourth Proportional to 343,840.83, 515,758.92 and 187,065.72

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Solution

The fourth proportional to 343,840.83, 515,758.92 and 187,065.72 is: 280,597.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,840.83 : 515,758.92 = 187,065.72 : x
  2. Step 2: Convert to fraction form
    343,840.83/515,758.92 = 187,065.72/x
  3. Step 3: Cross multiply
    343,840.83x = 515,758.92 × 187,065.72
  4. Step 4: Simplify right side
    343,840.83x = 96,480,813,716.22
  5. Step 5: Solve for x
    x = 96,480,813,716.22/343,840.83
  6. Step 6: Final answer
    x = 280,597.32

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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.