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Finding the Fourth Proportional to 14,153.76, 19,532.88 and 7,866

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Solution

The fourth proportional to 14,153.76, 19,532.88 and 7,866 is: 10,855.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,153.76 : 19,532.88 = 7,866 : x
  2. Step 2: Convert to fraction form
    14,153.76/19,532.88 = 7,866/x
  3. Step 3: Cross multiply
    14,153.76x = 19,532.88 × 7,866
  4. Step 4: Simplify right side
    14,153.76x = 153,645,634.08
  5. Step 5: Solve for x
    x = 153,645,634.08/14,153.76
  6. Step 6: Final answer
    x = 10,855.46

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Why These Related Problems?

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