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Finding the Fourth Proportional to 89,866.16, 134,689.92 and 63,578.48

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Solution

The fourth proportional to 89,866.16, 134,689.92 and 63,578.48 is: 95,290.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,866.16 : 134,689.92 = 63,578.48 : x
  2. Step 2: Convert to fraction form
    89,866.16/134,689.92 = 63,578.48/x
  3. Step 3: Cross multiply
    89,866.16x = 134,689.92 × 63,578.48
  4. Step 4: Simplify right side
    89,866.16x = 8,563,380,384.92
  5. Step 5: Solve for x
    x = 8,563,380,384.92/89,866.16
  6. Step 6: Final answer
    x = 95,290.38

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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.