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Finding the Fourth Proportional to 665,235.40, 997,853.10 and 191,936.20

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Solution

The fourth proportional to 665,235.40, 997,853.10 and 191,936.20 is: 287,904.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,235.40 : 997,853.10 = 191,936.20 : x
  2. Step 2: Convert to fraction form
    665,235.40/997,853.10 = 191,936.20/x
  3. Step 3: Cross multiply
    665,235.40x = 997,853.10 × 191,936.20
  4. Step 4: Simplify right side
    665,235.40x = 191,524,132,172.22
  5. Step 5: Solve for x
    x = 191,524,132,172.22/665,235.40
  6. Step 6: Final answer
    x = 287,904.30

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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.