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Finding the Fourth Proportional to 19,485.88, 26,893.98 and 11,532.49

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Solution

The fourth proportional to 19,485.88, 26,893.98 and 11,532.49 is: 15,916.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,485.88 : 26,893.98 = 11,532.49 : x
  2. Step 2: Convert to fraction form
    19,485.88/26,893.98 = 11,532.49/x
  3. Step 3: Cross multiply
    19,485.88x = 26,893.98 × 11,532.49
  4. Step 4: Simplify right side
    19,485.88x = 310,154,555.41
  5. Step 5: Solve for x
    x = 310,154,555.41/19,485.88
  6. Step 6: Final answer
    x = 15,916.89

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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.