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Finding the Fourth Proportional to 455,672.60, 683,508.90 and 189,952.10

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Solution

The fourth proportional to 455,672.60, 683,508.90 and 189,952.10 is: 284,928.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    455,672.60 : 683,508.90 = 189,952.10 : x
  2. Step 2: Convert to fraction form
    455,672.60/683,508.90 = 189,952.10/x
  3. Step 3: Cross multiply
    455,672.60x = 683,508.90 × 189,952.10
  4. Step 4: Simplify right side
    455,672.60x = 129,833,950,923.69
  5. Step 5: Solve for x
    x = 129,833,950,923.69/455,672.60
  6. Step 6: Final answer
    x = 284,928.15

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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.