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Finding the Fourth Proportional to 19,362.70, 26,720.85 and 10,866.70

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Solution

The fourth proportional to 19,362.70, 26,720.85 and 10,866.70 is: 14,996.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,362.70 : 26,720.85 = 10,866.70 : x
  2. Step 2: Convert to fraction form
    19,362.70/26,720.85 = 10,866.70/x
  3. Step 3: Cross multiply
    19,362.70x = 26,720.85 × 10,866.70
  4. Step 4: Simplify right side
    19,362.70x = 290,367,460.70
  5. Step 5: Solve for x
    x = 290,367,460.70/19,362.70
  6. Step 6: Final answer
    x = 14,996.23

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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.