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Finding the Fourth Proportional to 19,358.76, 26,719.17 and 11,403.75

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Solution

The fourth proportional to 19,358.76, 26,719.17 and 11,403.75 is: 15,739.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,358.76 : 26,719.17 = 11,403.75 : x
  2. Step 2: Convert to fraction form
    19,358.76/26,719.17 = 11,403.75/x
  3. Step 3: Cross multiply
    19,358.76x = 26,719.17 × 11,403.75
  4. Step 4: Simplify right side
    19,358.76x = 304,698,734.89
  5. Step 5: Solve for x
    x = 304,698,734.89/19,358.76
  6. Step 6: Final answer
    x = 15,739.58

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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.