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Finding the Fourth Proportional to 73,935.18, 110,880.90 and 21,345.12

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Solution

The fourth proportional to 73,935.18, 110,880.90 and 21,345.12 is: 32,011.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,935.18 : 110,880.90 = 21,345.12 : x
  2. Step 2: Convert to fraction form
    73,935.18/110,880.90 = 21,345.12/x
  3. Step 3: Cross multiply
    73,935.18x = 110,880.90 × 21,345.12
  4. Step 4: Simplify right side
    73,935.18x = 2,366,766,116.21
  5. Step 5: Solve for x
    x = 2,366,766,116.21/73,935.18
  6. Step 6: Final answer
    x = 32,011.37

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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.