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Finding the Fourth Proportional to 7,989.61, 11,973.48 and 5,069.97

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Solution

The fourth proportional to 7,989.61, 11,973.48 and 5,069.97 is: 7,598.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,989.61 : 11,973.48 = 5,069.97 : x
  2. Step 2: Convert to fraction form
    7,989.61/11,973.48 = 5,069.97/x
  3. Step 3: Cross multiply
    7,989.61x = 11,973.48 × 5,069.97
  4. Step 4: Simplify right side
    7,989.61x = 60,705,184.40
  5. Step 5: Solve for x
    x = 60,705,184.40/7,989.61
  6. Step 6: Final answer
    x = 7,598.02

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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.