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Finding the Fourth Proportional to 19,347, 26,701.38 and 11,389.96

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Solution

The fourth proportional to 19,347, 26,701.38 and 11,389.96 is: 15,719.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,347 : 26,701.38 = 11,389.96 : x
  2. Step 2: Convert to fraction form
    19,347/26,701.38 = 11,389.96/x
  3. Step 3: Cross multiply
    19,347x = 26,701.38 × 11,389.96
  4. Step 4: Simplify right side
    19,347x = 304,127,650.14
  5. Step 5: Solve for x
    x = 304,127,650.14/19,347
  6. Step 6: Final answer
    x = 15,719.63

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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.