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Finding the Fourth Proportional to 72,922.80, 109,399.68 and 23,017.32

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Solution

The fourth proportional to 72,922.80, 109,399.68 and 23,017.32 is: 34,530.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,922.80 : 109,399.68 = 23,017.32 : x
  2. Step 2: Convert to fraction form
    72,922.80/109,399.68 = 23,017.32/x
  3. Step 3: Cross multiply
    72,922.80x = 109,399.68 × 23,017.32
  4. Step 4: Simplify right side
    72,922.80x = 2,518,087,442.46
  5. Step 5: Solve for x
    x = 2,518,087,442.46/72,922.80
  6. Step 6: Final answer
    x = 34,530.87

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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.