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Finding the Fourth Proportional to 15,048.65, 20,765.97 and 8,333.75

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Solution

The fourth proportional to 15,048.65, 20,765.97 and 8,333.75 is: 11,499.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,048.65 : 20,765.97 = 8,333.75 : x
  2. Step 2: Convert to fraction form
    15,048.65/20,765.97 = 8,333.75/x
  3. Step 3: Cross multiply
    15,048.65x = 20,765.97 × 8,333.75
  4. Step 4: Simplify right side
    15,048.65x = 173,058,454.40
  5. Step 5: Solve for x
    x = 173,058,454.40/15,048.65
  6. Step 6: Final answer
    x = 11,499.93

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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.