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Finding the Fourth Proportional to 70,933.39, 106,328.28 and 45,989.29

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Solution

The fourth proportional to 70,933.39, 106,328.28 and 45,989.29 is: 68,937.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,933.39 : 106,328.28 = 45,989.29 : x
  2. Step 2: Convert to fraction form
    70,933.39/106,328.28 = 45,989.29/x
  3. Step 3: Cross multiply
    70,933.39x = 106,328.28 × 45,989.29
  4. Step 4: Simplify right side
    70,933.39x = 4,889,961,874.17
  5. Step 5: Solve for x
    x = 4,889,961,874.17/70,933.39
  6. Step 6: Final answer
    x = 68,937.38

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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.