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Finding the Fourth Proportional to 11,448.74, 15,799.86 and 6,412.67

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Solution

The fourth proportional to 11,448.74, 15,799.86 and 6,412.67 is: 8,849.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,448.74 : 15,799.86 = 6,412.67 : x
  2. Step 2: Convert to fraction form
    11,448.74/15,799.86 = 6,412.67/x
  3. Step 3: Cross multiply
    11,448.74x = 15,799.86 × 6,412.67
  4. Step 4: Simplify right side
    11,448.74x = 101,319,268.48
  5. Step 5: Solve for x
    x = 101,319,268.48/11,448.74
  6. Step 6: Final answer
    x = 8,849.82

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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.