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Finding the Fourth Proportional to 865,105.05, 1,193,841.03 and 477,920.58

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Solution

The fourth proportional to 865,105.05, 1,193,841.03 and 477,920.58 is: 659,528.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    865,105.05 : 1,193,841.03 = 477,920.58 : x
  2. Step 2: Convert to fraction form
    865,105.05/1,193,841.03 = 477,920.58/x
  3. Step 3: Cross multiply
    865,105.05x = 1,193,841.03 × 477,920.58
  4. Step 4: Simplify right side
    865,105.05x = 570,561,197,485.40
  5. Step 5: Solve for x
    x = 570,561,197,485.40/865,105.05
  6. Step 6: Final answer
    x = 659,528.22

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.