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Finding the Fourth Proportional to 368,693.76, 508,954.66 and 247,905.06

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Solution

The fourth proportional to 368,693.76, 508,954.66 and 247,905.06 is: 342,214.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    368,693.76 : 508,954.66 = 247,905.06 : x
  2. Step 2: Convert to fraction form
    368,693.76/508,954.66 = 247,905.06/x
  3. Step 3: Cross multiply
    368,693.76x = 508,954.66 × 247,905.06
  4. Step 4: Simplify right side
    368,693.76x = 126,172,435,524.58
  5. Step 5: Solve for x
    x = 126,172,435,524.58/368,693.76
  6. Step 6: Final answer
    x = 342,214.73

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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.