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Finding the Fourth Proportional to 13,076.15, 18,044.91 and 7,107.68

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Solution

The fourth proportional to 13,076.15, 18,044.91 and 7,107.68 is: 9,808.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,076.15 : 18,044.91 = 7,107.68 : x
  2. Step 2: Convert to fraction form
    13,076.15/18,044.91 = 7,107.68/x
  3. Step 3: Cross multiply
    13,076.15x = 18,044.91 × 7,107.68
  4. Step 4: Simplify right side
    13,076.15x = 128,257,445.91
  5. Step 5: Solve for x
    x = 128,257,445.91/13,076.15
  6. Step 6: Final answer
    x = 9,808.50

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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.