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Finding the Fourth Proportional to 663,014.40, 994,521.60 and 189,715.20

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Solution

The fourth proportional to 663,014.40, 994,521.60 and 189,715.20 is: 284,572.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    663,014.40 : 994,521.60 = 189,715.20 : x
  2. Step 2: Convert to fraction form
    663,014.40/994,521.60 = 189,715.20/x
  3. Step 3: Cross multiply
    663,014.40x = 994,521.60 × 189,715.20
  4. Step 4: Simplify right side
    663,014.40x = 188,675,864,248.32
  5. Step 5: Solve for x
    x = 188,675,864,248.32/663,014.40
  6. Step 6: Final answer
    x = 284,572.80

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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.