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Finding the Fourth Proportional to 89,868, 124,017.84 and 50,124

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Solution

The fourth proportional to 89,868, 124,017.84 and 50,124 is: 69,171.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,868 : 124,017.84 = 50,124 : x
  2. Step 2: Convert to fraction form
    89,868/124,017.84 = 50,124/x
  3. Step 3: Cross multiply
    89,868x = 124,017.84 × 50,124
  4. Step 4: Simplify right side
    89,868x = 6,216,270,212.16
  5. Step 5: Solve for x
    x = 6,216,270,212.16/89,868
  6. Step 6: Final answer
    x = 69,171.12

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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.