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Finding the Fourth Proportional to 645,193.80, 967,790.70 and 433,686.60

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Solution

The fourth proportional to 645,193.80, 967,790.70 and 433,686.60 is: 650,529.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    645,193.80 : 967,790.70 = 433,686.60 : x
  2. Step 2: Convert to fraction form
    645,193.80/967,790.70 = 433,686.60/x
  3. Step 3: Cross multiply
    645,193.80x = 967,790.70 × 433,686.60
  4. Step 4: Simplify right side
    645,193.80x = 419,717,858,194.62
  5. Step 5: Solve for x
    x = 419,717,858,194.62/645,193.80
  6. Step 6: Final answer
    x = 650,529.90

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