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Finding the Fourth Proportional to 8,798.63, 12,140.21 and 5,214.70

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Solution

The fourth proportional to 8,798.63, 12,140.21 and 5,214.70 is: 7,195.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,798.63 : 12,140.21 = 5,214.70 : x
  2. Step 2: Convert to fraction form
    8,798.63/12,140.21 = 5,214.70/x
  3. Step 3: Cross multiply
    8,798.63x = 12,140.21 × 5,214.70
  4. Step 4: Simplify right side
    8,798.63x = 63,307,615.44
  5. Step 5: Solve for x
    x = 63,307,615.44/8,798.63
  6. Step 6: Final answer
    x = 7,195.17

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.