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Finding the Fourth Proportional to 19,648.50, 27,114.93 and 10,816.50

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Solution

The fourth proportional to 19,648.50, 27,114.93 and 10,816.50 is: 14,926.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,648.50 : 27,114.93 = 10,816.50 : x
  2. Step 2: Convert to fraction form
    19,648.50/27,114.93 = 10,816.50/x
  3. Step 3: Cross multiply
    19,648.50x = 27,114.93 × 10,816.50
  4. Step 4: Simplify right side
    19,648.50x = 293,288,640.35
  5. Step 5: Solve for x
    x = 293,288,640.35/19,648.50
  6. Step 6: Final answer
    x = 14,926.77

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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.