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Finding the Fourth Proportional to 343,633.32, 515,326.46 and 118,932.84

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Solution

The fourth proportional to 343,633.32, 515,326.46 and 118,932.84 is: 178,356.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    343,633.32 : 515,326.46 = 118,932.84 : x
  2. Step 2: Convert to fraction form
    343,633.32/515,326.46 = 118,932.84/x
  3. Step 3: Cross multiply
    343,633.32x = 515,326.46 × 118,932.84
  4. Step 4: Simplify right side
    343,633.32x = 61,289,238,820.28
  5. Step 5: Solve for x
    x = 61,289,238,820.28/343,633.32
  6. Step 6: Final answer
    x = 178,356.51

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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.