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Finding the Fourth Proportional to 98,671.52, 147,990.87 and 35,478.84

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Solution

The fourth proportional to 98,671.52, 147,990.87 and 35,478.84 is: 53,212.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    98,671.52 : 147,990.87 = 35,478.84 : x
  2. Step 2: Convert to fraction form
    98,671.52/147,990.87 = 35,478.84/x
  3. Step 3: Cross multiply
    98,671.52x = 147,990.87 × 35,478.84
  4. Step 4: Simplify right side
    98,671.52x = 5,250,543,804.27
  5. Step 5: Solve for x
    x = 5,250,543,804.27/98,671.52
  6. Step 6: Final answer
    x = 53,212.36

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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.