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Finding the Fourth Proportional to 664,330.80, 927,963.60 and 664,330.80

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Solution

The fourth proportional to 664,330.80, 927,963.60 and 664,330.80 is: 927,963.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,330.80 : 927,963.60 = 664,330.80 : x
  2. Step 2: Convert to fraction form
    664,330.80/927,963.60 = 664,330.80/x
  3. Step 3: Cross multiply
    664,330.80x = 927,963.60 × 664,330.80
  4. Step 4: Simplify right side
    664,330.80x = 616,474,800,758.88
  5. Step 5: Solve for x
    x = 616,474,800,758.88/664,330.80
  6. Step 6: Final answer
    x = 927,963.60

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Half scale
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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 (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.