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Finding the Fourth Proportional to 19,487.88, 26,895.51 and 11,532.87

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Solution

The fourth proportional to 19,487.88, 26,895.51 and 11,532.87 is: 15,916.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,487.88 : 26,895.51 = 11,532.87 : x
  2. Step 2: Convert to fraction form
    19,487.88/26,895.51 = 11,532.87/x
  3. Step 3: Cross multiply
    19,487.88x = 26,895.51 × 11,532.87
  4. Step 4: Simplify right side
    19,487.88x = 310,182,420.41
  5. Step 5: Solve for x
    x = 310,182,420.41/19,487.88
  6. Step 6: Final answer
    x = 15,916.68

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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.