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Finding the Fourth Proportional to 17,595.80, 26,393.70 and 5,115.80

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Solution

The fourth proportional to 17,595.80, 26,393.70 and 5,115.80 is: 7,673.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,595.80 : 26,393.70 = 5,115.80 : x
  2. Step 2: Convert to fraction form
    17,595.80/26,393.70 = 5,115.80/x
  3. Step 3: Cross multiply
    17,595.80x = 26,393.70 × 5,115.80
  4. Step 4: Simplify right side
    17,595.80x = 135,024,890.46
  5. Step 5: Solve for x
    x = 135,024,890.46/17,595.80
  6. Step 6: Final answer
    x = 7,673.70

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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.