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Finding the Fourth Proportional to 89,348.67, 123,170.93 and 63,809.98

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Solution

The fourth proportional to 89,348.67, 123,170.93 and 63,809.98 is: 87,964.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,348.67 : 123,170.93 = 63,809.98 : x
  2. Step 2: Convert to fraction form
    89,348.67/123,170.93 = 63,809.98/x
  3. Step 3: Cross multiply
    89,348.67x = 123,170.93 × 63,809.98
  4. Step 4: Simplify right side
    89,348.67x = 7,859,534,192.19
  5. Step 5: Solve for x
    x = 7,859,534,192.19/89,348.67
  6. Step 6: Final answer
    x = 87,964.76

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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.