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Finding the Fourth Proportional to 907,553.70, 1,361,330.55 and 655,611.30

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Solution

The fourth proportional to 907,553.70, 1,361,330.55 and 655,611.30 is: 983,416.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    907,553.70 : 1,361,330.55 = 655,611.30 : x
  2. Step 2: Convert to fraction form
    907,553.70/1,361,330.55 = 655,611.30/x
  3. Step 3: Cross multiply
    907,553.70x = 1,361,330.55 × 655,611.30
  4. Step 4: Simplify right side
    907,553.70x = 892,503,691,615.22
  5. Step 5: Solve for x
    x = 892,503,691,615.22/907,553.70
  6. Step 6: Final answer
    x = 983,416.95

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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.