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Finding the Fourth Proportional to 18,509.97, 25,547.05 and 10,960.49

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Solution

The fourth proportional to 18,509.97, 25,547.05 and 10,960.49 is: 15,127.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,509.97 : 25,547.05 = 10,960.49 : x
  2. Step 2: Convert to fraction form
    18,509.97/25,547.05 = 10,960.49/x
  3. Step 3: Cross multiply
    18,509.97x = 25,547.05 × 10,960.49
  4. Step 4: Simplify right side
    18,509.97x = 280,008,130.12
  5. Step 5: Solve for x
    x = 280,008,130.12/18,509.97
  6. Step 6: Final answer
    x = 15,127.42

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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.