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Finding the Fourth Proportional to 8,973.45, 12,372.08 and 7,712.01

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Solution

The fourth proportional to 8,973.45, 12,372.08 and 7,712.01 is: 10,632.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,973.45 : 12,372.08 = 7,712.01 : x
  2. Step 2: Convert to fraction form
    8,973.45/12,372.08 = 7,712.01/x
  3. Step 3: Cross multiply
    8,973.45x = 12,372.08 × 7,712.01
  4. Step 4: Simplify right side
    8,973.45x = 95,413,566.12
  5. Step 5: Solve for x
    x = 95,413,566.12/8,973.45
  6. Step 6: Final answer
    x = 10,632.87

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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.