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Finding the Fourth Proportional to 26,653.50, 39,980.48 and 9,123.48

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Solution

The fourth proportional to 26,653.50, 39,980.48 and 9,123.48 is: 13,685.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    26,653.50 : 39,980.48 = 9,123.48 : x
  2. Step 2: Convert to fraction form
    26,653.50/39,980.48 = 9,123.48/x
  3. Step 3: Cross multiply
    26,653.50x = 39,980.48 × 9,123.48
  4. Step 4: Simplify right side
    26,653.50x = 364,761,064.05
  5. Step 5: Solve for x
    x = 364,761,064.05/26,653.50
  6. Step 6: Final answer
    x = 13,685.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.