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Finding the Fourth Proportional to 25,879.55, 38,809.77 and 9,235.13

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Solution

The fourth proportional to 25,879.55, 38,809.77 and 9,235.13 is: 13,849.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,879.55 : 38,809.77 = 9,235.13 : x
  2. Step 2: Convert to fraction form
    25,879.55/38,809.77 = 9,235.13/x
  3. Step 3: Cross multiply
    25,879.55x = 38,809.77 × 9,235.13
  4. Step 4: Simplify right side
    25,879.55x = 358,413,077.17
  5. Step 5: Solve for x
    x = 358,413,077.17/25,879.55
  6. Step 6: Final answer
    x = 13,849.28

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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.