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Finding the Fourth Proportional to 19,359.86, 26,719.20 and 11,402.01

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Solution

The fourth proportional to 19,359.86, 26,719.20 and 11,402.01 is: 15,736.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,359.86 : 26,719.20 = 11,402.01 : x
  2. Step 2: Convert to fraction form
    19,359.86/26,719.20 = 11,402.01/x
  3. Step 3: Cross multiply
    19,359.86x = 26,719.20 × 11,402.01
  4. Step 4: Simplify right side
    19,359.86x = 304,652,585.59
  5. Step 5: Solve for x
    x = 304,652,585.59/19,359.86
  6. Step 6: Final answer
    x = 15,736.31

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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.