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Finding the Fourth Proportional to 10,720.85, 16,070.63 and 5,088.65

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Solution

The fourth proportional to 10,720.85, 16,070.63 and 5,088.65 is: 7,627.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,720.85 : 16,070.63 = 5,088.65 : x
  2. Step 2: Convert to fraction form
    10,720.85/16,070.63 = 5,088.65/x
  3. Step 3: Cross multiply
    10,720.85x = 16,070.63 × 5,088.65
  4. Step 4: Simplify right side
    10,720.85x = 81,777,705.55
  5. Step 5: Solve for x
    x = 81,777,705.55/10,720.85
  6. Step 6: Final answer
    x = 7,627.92

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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.