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Finding the Fourth Proportional to 658,408.40, 987,612.60 and 185,109.20

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Solution

The fourth proportional to 658,408.40, 987,612.60 and 185,109.20 is: 277,663.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    658,408.40 : 987,612.60 = 185,109.20 : x
  2. Step 2: Convert to fraction form
    658,408.40/987,612.60 = 185,109.20/x
  3. Step 3: Cross multiply
    658,408.40x = 987,612.60 × 185,109.20
  4. Step 4: Simplify right side
    658,408.40x = 182,816,178,295.92
  5. Step 5: Solve for x
    x = 182,816,178,295.92/658,408.40
  6. Step 6: Final answer
    x = 277,663.80

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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.