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Finding the Fourth Proportional to 461,441.40, 692,162.10 and 455,220.60

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Solution

The fourth proportional to 461,441.40, 692,162.10 and 455,220.60 is: 682,830.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    461,441.40 : 692,162.10 = 455,220.60 : x
  2. Step 2: Convert to fraction form
    461,441.40/692,162.10 = 455,220.60/x
  3. Step 3: Cross multiply
    461,441.40x = 692,162.10 × 455,220.60
  4. Step 4: Simplify right side
    461,441.40x = 315,086,446,459.26
  5. Step 5: Solve for x
    x = 315,086,446,459.26/461,441.40
  6. Step 6: Final answer
    x = 682,830.90

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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.