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Finding the Fourth Proportional to 52,866.65, 72,956.43 and 28,993.11

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Solution

The fourth proportional to 52,866.65, 72,956.43 and 28,993.11 is: 40,010.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    52,866.65 : 72,956.43 = 28,993.11 : x
  2. Step 2: Convert to fraction form
    52,866.65/72,956.43 = 28,993.11/x
  3. Step 3: Cross multiply
    52,866.65x = 72,956.43 × 28,993.11
  4. Step 4: Simplify right side
    52,866.65x = 2,115,233,800.20
  5. Step 5: Solve for x
    x = 2,115,233,800.20/52,866.65
  6. Step 6: Final answer
    x = 40,010.74

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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.