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Finding the Fourth Proportional to 27,145.16, 40,717.74 and 7,422.22

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Solution

The fourth proportional to 27,145.16, 40,717.74 and 7,422.22 is: 11,133.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    27,145.16 : 40,717.74 = 7,422.22 : x
  2. Step 2: Convert to fraction form
    27,145.16/40,717.74 = 7,422.22/x
  3. Step 3: Cross multiply
    27,145.16x = 40,717.74 × 7,422.22
  4. Step 4: Simplify right side
    27,145.16x = 302,215,820.59
  5. Step 5: Solve for x
    x = 302,215,820.59/27,145.16
  6. Step 6: Final answer
    x = 11,133.32

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.