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Finding the Fourth Proportional to 13,075.43, 18,044.22 and 7,107.11

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Solution

The fourth proportional to 13,075.43, 18,044.22 and 7,107.11 is: 9,807.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,075.43 : 18,044.22 = 7,107.11 : x
  2. Step 2: Convert to fraction form
    13,075.43/18,044.22 = 7,107.11/x
  3. Step 3: Cross multiply
    13,075.43x = 18,044.22 × 7,107.11
  4. Step 4: Simplify right side
    13,075.43x = 128,242,166.18
  5. Step 5: Solve for x
    x = 128,242,166.18/13,075.43
  6. Step 6: Final answer
    x = 9,807.88

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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.