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Finding the Fourth Proportional to 19,509.31, 26,922.80 and 10,556.80

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Solution

The fourth proportional to 19,509.31, 26,922.80 and 10,556.80 is: 14,568.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,509.31 : 26,922.80 = 10,556.80 : x
  2. Step 2: Convert to fraction form
    19,509.31/26,922.80 = 10,556.80/x
  3. Step 3: Cross multiply
    19,509.31x = 26,922.80 × 10,556.80
  4. Step 4: Simplify right side
    19,509.31x = 284,218,666.18
  5. Step 5: Solve for x
    x = 284,218,666.18/19,509.31
  6. Step 6: Final answer
    x = 14,568.36

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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.