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Finding the Fourth Proportional to 298,718.92, 448,078.38 and 88,340.46

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Solution

The fourth proportional to 298,718.92, 448,078.38 and 88,340.46 is: 132,510.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    298,718.92 : 448,078.38 = 88,340.46 : x
  2. Step 2: Convert to fraction form
    298,718.92/448,078.38 = 88,340.46/x
  3. Step 3: Cross multiply
    298,718.92x = 448,078.38 × 88,340.46
  4. Step 4: Simplify right side
    298,718.92x = 39,583,450,205.25
  5. Step 5: Solve for x
    x = 39,583,450,205.25/298,718.92
  6. Step 6: Final answer
    x = 132,510.69

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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.