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Finding the Fourth Proportional to 7,293.29, 10,866.50 and 6,815.90

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Solution

The fourth proportional to 7,293.29, 10,866.50 and 6,815.90 is: 10,155.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,293.29 : 10,866.50 = 6,815.90 : x
  2. Step 2: Convert to fraction form
    7,293.29/10,866.50 = 6,815.90/x
  3. Step 3: Cross multiply
    7,293.29x = 10,866.50 × 6,815.90
  4. Step 4: Simplify right side
    7,293.29x = 74,064,973.21
  5. Step 5: Solve for x
    x = 74,064,973.21/7,293.29
  6. Step 6: Final answer
    x = 10,155.22

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.