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Finding the Fourth Proportional to 3,565.21, 5,347.81 and 968.15

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Solution

The fourth proportional to 3,565.21, 5,347.81 and 968.15 is: 1,452.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    3,565.21 : 5,347.81 = 968.15 : x
  2. Step 2: Convert to fraction form
    3,565.21/5,347.81 = 968.15/x
  3. Step 3: Cross multiply
    3,565.21x = 5,347.81 × 968.15
  4. Step 4: Simplify right side
    3,565.21x = 5,177,482.25
  5. Step 5: Solve for x
    x = 5,177,482.25/3,565.21
  6. Step 6: Final answer
    x = 1,452.22

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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.