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Finding the Fourth Proportional to 6,600,979.90, 9,901,469.85 and 4,333,498.30

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Solution

The fourth proportional to 6,600,979.90, 9,901,469.85 and 4,333,498.30 is: 6,500,247.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,600,979.90 : 9,901,469.85 = 4,333,498.30 : x
  2. Step 2: Convert to fraction form
    6,600,979.90/9,901,469.85 = 4,333,498.30/x
  3. Step 3: Cross multiply
    6,600,979.90x = 9,901,469.85 × 4,333,498.30
  4. Step 4: Simplify right side
    6,600,979.90x = 42,908,002,762,476.25
  5. Step 5: Solve for x
    x = 42,908,002,762,476.25/6,600,979.90
  6. Step 6: Final answer
    x = 6,500,247.45

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Double scale
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Similar ratio
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1.5x scale

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.