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Finding the Fourth Proportional to 5,724.21, 8,578.51 and 5,555.89

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Solution

The fourth proportional to 5,724.21, 8,578.51 and 5,555.89 is: 8,326.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,724.21 : 8,578.51 = 5,555.89 : x
  2. Step 2: Convert to fraction form
    5,724.21/8,578.51 = 5,555.89/x
  3. Step 3: Cross multiply
    5,724.21x = 8,578.51 × 5,555.89
  4. Step 4: Simplify right side
    5,724.21x = 47,661,254.76
  5. Step 5: Solve for x
    x = 47,661,254.76/5,724.21
  6. Step 6: Final answer
    x = 8,326.26

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1.5x scale

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.