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Finding the Fourth Proportional to 6,652,928.80, 9,979,393.20 and 6,564,455.20

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Solution

The fourth proportional to 6,652,928.80, 9,979,393.20 and 6,564,455.20 is: 9,846,682.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,652,928.80 : 9,979,393.20 = 6,564,455.20 : x
  2. Step 2: Convert to fraction form
    6,652,928.80/9,979,393.20 = 6,564,455.20/x
  3. Step 3: Cross multiply
    6,652,928.80x = 9,979,393.20 × 6,564,455.20
  4. Step 4: Simplify right side
    6,652,928.80x = 65,509,279,584,584.64
  5. Step 5: Solve for x
    x = 65,509,279,584,584.64/6,652,928.80
  6. Step 6: Final answer
    x = 9,846,682.80

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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.