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Finding the Fourth Proportional to 563,611.40, 846,194.70 and 445,416.20

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Solution

The fourth proportional to 563,611.40, 846,194.70 and 445,416.20 is: 668,738.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,611.40 : 846,194.70 = 445,416.20 : x
  2. Step 2: Convert to fraction form
    563,611.40/846,194.70 = 445,416.20/x
  3. Step 3: Cross multiply
    563,611.40x = 846,194.70 × 445,416.20
  4. Step 4: Simplify right side
    563,611.40x = 376,908,827,734.14
  5. Step 5: Solve for x
    x = 376,908,827,734.14/563,611.40
  6. Step 6: Final answer
    x = 668,738.83

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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.