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Finding the Fourth Proportional to 5,568.81, 7,688.21 and 4,821.59

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Solution

The fourth proportional to 5,568.81, 7,688.21 and 4,821.59 is: 6,656.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,568.81 : 7,688.21 = 4,821.59 : x
  2. Step 2: Convert to fraction form
    5,568.81/7,688.21 = 4,821.59/x
  3. Step 3: Cross multiply
    5,568.81x = 7,688.21 × 4,821.59
  4. Step 4: Simplify right side
    5,568.81x = 37,069,333.90
  5. Step 5: Solve for x
    x = 37,069,333.90/5,568.81
  6. Step 6: Final answer
    x = 6,656.60

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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.