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Finding the Fourth Proportional to 6,646,550.80, 9,969,826.20 and 6,604,560.40

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Solution

The fourth proportional to 6,646,550.80, 9,969,826.20 and 6,604,560.40 is: 9,906,840.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,646,550.80 : 9,969,826.20 = 6,604,560.40 : x
  2. Step 2: Convert to fraction form
    6,646,550.80/9,969,826.20 = 6,604,560.40/x
  3. Step 3: Cross multiply
    6,646,550.80x = 9,969,826.20 × 6,604,560.40
  4. Step 4: Simplify right side
    6,646,550.80x = 65,846,319,315,402.48
  5. Step 5: Solve for x
    x = 65,846,319,315,402.48/6,646,550.80
  6. Step 6: Final answer
    x = 9,906,840.60

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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.