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Finding the Fourth Proportional to 68,323.83, 102,505.59 and 28,335.48

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Solution

The fourth proportional to 68,323.83, 102,505.59 and 28,335.48 is: 42,511.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,323.83 : 102,505.59 = 28,335.48 : x
  2. Step 2: Convert to fraction form
    68,323.83/102,505.59 = 28,335.48/x
  3. Step 3: Cross multiply
    68,323.83x = 102,505.59 × 28,335.48
  4. Step 4: Simplify right side
    68,323.83x = 2,904,545,095.33
  5. Step 5: Solve for x
    x = 2,904,545,095.33/68,323.83
  6. Step 6: Final answer
    x = 42,511.45

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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.