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Finding the Fourth Proportional to 6,644,439.80, 9,966,659.70 and 3,774,658.40

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Solution

The fourth proportional to 6,644,439.80, 9,966,659.70 and 3,774,658.40 is: 5,661,987.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,644,439.80 : 9,966,659.70 = 3,774,658.40 : x
  2. Step 2: Convert to fraction form
    6,644,439.80/9,966,659.70 = 3,774,658.40/x
  3. Step 3: Cross multiply
    6,644,439.80x = 9,966,659.70 × 3,774,658.40
  4. Step 4: Simplify right side
    6,644,439.80x = 37,620,735,756,546.48
  5. Step 5: Solve for x
    x = 37,620,735,756,546.48/6,644,439.80
  6. Step 6: Final answer
    x = 5,661,987.60

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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.