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Finding the Fourth Proportional to 5,681.80, 8,511.54 and 5,062.60

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Solution

The fourth proportional to 5,681.80, 8,511.54 and 5,062.60 is: 7,583.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.80 : 8,511.54 = 5,062.60 : x
  2. Step 2: Convert to fraction form
    5,681.80/8,511.54 = 5,062.60/x
  3. Step 3: Cross multiply
    5,681.80x = 8,511.54 × 5,062.60
  4. Step 4: Simplify right side
    5,681.80x = 43,090,522.40
  5. Step 5: Solve for x
    x = 43,090,522.40/5,681.80
  6. Step 6: Final answer
    x = 7,583.96

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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.