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Finding the Fourth Proportional to 12,079.76, 16,669.44 and 7,044.08

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Solution

The fourth proportional to 12,079.76, 16,669.44 and 7,044.08 is: 9,720.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,079.76 : 16,669.44 = 7,044.08 : x
  2. Step 2: Convert to fraction form
    12,079.76/16,669.44 = 7,044.08/x
  3. Step 3: Cross multiply
    12,079.76x = 16,669.44 × 7,044.08
  4. Step 4: Simplify right side
    12,079.76x = 117,420,868.92
  5. Step 5: Solve for x
    x = 117,420,868.92/12,079.76
  6. Step 6: Final answer
    x = 9,720.46

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1.5x scale

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.