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Finding the Fourth Proportional to 19,366.59, 26,731.13 and 11,411.31

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Solution

The fourth proportional to 19,366.59, 26,731.13 and 11,411.31 is: 15,750.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,366.59 : 26,731.13 = 11,411.31 : x
  2. Step 2: Convert to fraction form
    19,366.59/26,731.13 = 11,411.31/x
  3. Step 3: Cross multiply
    19,366.59x = 26,731.13 × 11,411.31
  4. Step 4: Simplify right side
    19,366.59x = 305,037,211.08
  5. Step 5: Solve for x
    x = 305,037,211.08/19,366.59
  6. Step 6: Final answer
    x = 15,750.69

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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.