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Finding the Fourth Proportional to 10,643.20, 14,687.76 and 5,927.60

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Solution

The fourth proportional to 10,643.20, 14,687.76 and 5,927.60 is: 8,180.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.20 : 14,687.76 = 5,927.60 : x
  2. Step 2: Convert to fraction form
    10,643.20/14,687.76 = 5,927.60/x
  3. Step 3: Cross multiply
    10,643.20x = 14,687.76 × 5,927.60
  4. Step 4: Simplify right side
    10,643.20x = 87,063,166.18
  5. Step 5: Solve for x
    x = 87,063,166.18/10,643.20
  6. Step 6: Final answer
    x = 8,180.17

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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.