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Finding the Fourth Proportional to 5,220.99, 7,200.29 and 3,330.45

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Solution

The fourth proportional to 5,220.99, 7,200.29 and 3,330.45 is: 4,593.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,220.99 : 7,200.29 = 3,330.45 : x
  2. Step 2: Convert to fraction form
    5,220.99/7,200.29 = 3,330.45/x
  3. Step 3: Cross multiply
    5,220.99x = 7,200.29 × 3,330.45
  4. Step 4: Simplify right side
    5,220.99x = 23,980,214.16
  5. Step 5: Solve for x
    x = 23,980,214.16/5,220.99
  6. Step 6: Final answer
    x = 4,593.04

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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.