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Finding the Fourth Proportional to 35,398.65, 48,849.27 and 20,300.16

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Solution

The fourth proportional to 35,398.65, 48,849.27 and 20,300.16 is: 28,013.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    35,398.65 : 48,849.27 = 20,300.16 : x
  2. Step 2: Convert to fraction form
    35,398.65/48,849.27 = 20,300.16/x
  3. Step 3: Cross multiply
    35,398.65x = 48,849.27 × 20,300.16
  4. Step 4: Simplify right side
    35,398.65x = 991,647,996.88
  5. Step 5: Solve for x
    x = 991,647,996.88/35,398.65
  6. Step 6: Final answer
    x = 28,013.72

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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.