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Finding the Fourth Proportional to 7,223.43, 9,966.07 and 4,240.20

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Solution

The fourth proportional to 7,223.43, 9,966.07 and 4,240.20 is: 5,850.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,223.43 : 9,966.07 = 4,240.20 : x
  2. Step 2: Convert to fraction form
    7,223.43/9,966.07 = 4,240.20/x
  3. Step 3: Cross multiply
    7,223.43x = 9,966.07 × 4,240.20
  4. Step 4: Simplify right side
    7,223.43x = 42,258,130.01
  5. Step 5: Solve for x
    x = 42,258,130.01/7,223.43
  6. Step 6: Final answer
    x = 5,850.15

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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.