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Finding the Fourth Proportional to 8,680,859.28, 11,978,484.72 and 4,759,583.48

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Solution

The fourth proportional to 8,680,859.28, 11,978,484.72 and 4,759,583.48 is: 6,567,621.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,680,859.28 : 11,978,484.72 = 4,759,583.48 : x
  2. Step 2: Convert to fraction form
    8,680,859.28/11,978,484.72 = 4,759,583.48/x
  3. Step 3: Cross multiply
    8,680,859.28x = 11,978,484.72 × 4,759,583.48
  4. Step 4: Simplify right side
    8,680,859.28x = 57,012,597,988,744.44
  5. Step 5: Solve for x
    x = 57,012,597,988,744.44/8,680,859.28
  6. Step 6: Final answer
    x = 6,567,621.49

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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.