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Finding the Fourth Proportional to 5,681.61, 8,516.12 and 4,290.44

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Solution

The fourth proportional to 5,681.61, 8,516.12 and 4,290.44 is: 6,430.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,681.61 : 8,516.12 = 4,290.44 : x
  2. Step 2: Convert to fraction form
    5,681.61/8,516.12 = 4,290.44/x
  3. Step 3: Cross multiply
    5,681.61x = 8,516.12 × 4,290.44
  4. Step 4: Simplify right side
    5,681.61x = 36,537,837.86
  5. Step 5: Solve for x
    x = 36,537,837.86/5,681.61
  6. Step 6: Final answer
    x = 6,430.90

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.