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Finding the Fourth Proportional to 11,480.16, 15,842.16 and 6,764.64

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Solution

The fourth proportional to 11,480.16, 15,842.16 and 6,764.64 is: 9,334.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    11,480.16 : 15,842.16 = 6,764.64 : x
  2. Step 2: Convert to fraction form
    11,480.16/15,842.16 = 6,764.64/x
  3. Step 3: Cross multiply
    11,480.16x = 15,842.16 × 6,764.64
  4. Step 4: Simplify right side
    11,480.16x = 107,166,509.22
  5. Step 5: Solve for x
    x = 107,166,509.22/11,480.16
  6. Step 6: Final answer
    x = 9,334.93

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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.