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Finding the Fourth Proportional to 10,955.16, 15,118.44 and 5,987.16

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Solution

The fourth proportional to 10,955.16, 15,118.44 and 5,987.16 is: 8,262.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,955.16 : 15,118.44 = 5,987.16 : x
  2. Step 2: Convert to fraction form
    10,955.16/15,118.44 = 5,987.16/x
  3. Step 3: Cross multiply
    10,955.16x = 15,118.44 × 5,987.16
  4. Step 4: Simplify right side
    10,955.16x = 90,516,519.23
  5. Step 5: Solve for x
    x = 90,516,519.23/10,955.16
  6. Step 6: Final answer
    x = 8,262.46

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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.