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Finding the Fourth Proportional to 10,643.61, 14,687.87 and 5,927.79

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Solution

The fourth proportional to 10,643.61, 14,687.87 and 5,927.79 is: 8,180.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    10,643.61 : 14,687.87 = 5,927.79 : x
  2. Step 2: Convert to fraction form
    10,643.61/14,687.87 = 5,927.79/x
  3. Step 3: Cross multiply
    10,643.61x = 14,687.87 × 5,927.79
  4. Step 4: Simplify right side
    10,643.61x = 87,066,579.27
  5. Step 5: Solve for x
    x = 87,066,579.27/10,643.61
  6. Step 6: Final answer
    x = 8,180.17

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1.5x scale

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.