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Finding the Fourth Proportional to 664,160.40, 995,074.20 and 545,187.60

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Solution

The fourth proportional to 664,160.40, 995,074.20 and 545,187.60 is: 816,823.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    664,160.40 : 995,074.20 = 545,187.60 : x
  2. Step 2: Convert to fraction form
    664,160.40/995,074.20 = 545,187.60/x
  3. Step 3: Cross multiply
    664,160.40x = 995,074.20 × 545,187.60
  4. Step 4: Simplify right side
    664,160.40x = 542,502,114,919.92
  5. Step 5: Solve for x
    x = 542,502,114,919.92/664,160.40
  6. Step 6: Final answer
    x = 816,823.94

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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.