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Finding the Fourth Proportional to 65,208.62, 89,985.66 and 38,344.98

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Solution

The fourth proportional to 65,208.62, 89,985.66 and 38,344.98 is: 52,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,208.62 : 89,985.66 = 38,344.98 : x
  2. Step 2: Convert to fraction form
    65,208.62/89,985.66 = 38,344.98/x
  3. Step 3: Cross multiply
    65,208.62x = 89,985.66 × 38,344.98
  4. Step 4: Simplify right side
    65,208.62x = 3,450,498,332.99
  5. Step 5: Solve for x
    x = 3,450,498,332.99/65,208.62
  6. Step 6: Final answer
    x = 52,914.76

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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.