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Finding the Fourth Proportional to 614,787.40, 922,181.10 and 414,020.80

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Solution

The fourth proportional to 614,787.40, 922,181.10 and 414,020.80 is: 621,031.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    614,787.40 : 922,181.10 = 414,020.80 : x
  2. Step 2: Convert to fraction form
    614,787.40/922,181.10 = 414,020.80/x
  3. Step 3: Cross multiply
    614,787.40x = 922,181.10 × 414,020.80
  4. Step 4: Simplify right side
    614,787.40x = 381,802,156,766.88
  5. Step 5: Solve for x
    x = 381,802,156,766.88/614,787.40
  6. Step 6: Final answer
    x = 621,031.20

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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.