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Finding the Fourth Proportional to 19,866.70, 27,415.44 and 10,914.10

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Solution

The fourth proportional to 19,866.70, 27,415.44 and 10,914.10 is: 15,061.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,866.70 : 27,415.44 = 10,914.10 : x
  2. Step 2: Convert to fraction form
    19,866.70/27,415.44 = 10,914.10/x
  3. Step 3: Cross multiply
    19,866.70x = 27,415.44 × 10,914.10
  4. Step 4: Simplify right side
    19,866.70x = 299,214,853.70
  5. Step 5: Solve for x
    x = 299,214,853.70/19,866.70
  6. Step 6: Final answer
    x = 15,061.13

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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.