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Finding the Fourth Proportional to 5,617.50, 7,752.15 and 3,133.50

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Solution

The fourth proportional to 5,617.50, 7,752.15 and 3,133.50 is: 4,324.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,617.50 : 7,752.15 = 3,133.50 : x
  2. Step 2: Convert to fraction form
    5,617.50/7,752.15 = 3,133.50/x
  3. Step 3: Cross multiply
    5,617.50x = 7,752.15 × 3,133.50
  4. Step 4: Simplify right side
    5,617.50x = 24,291,362.03
  5. Step 5: Solve for x
    x = 24,291,362.03/5,617.50
  6. Step 6: Final answer
    x = 4,324.23

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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.