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Finding the Fourth Proportional to 356,105.40, 534,503.70 and 178,812.60

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Solution

The fourth proportional to 356,105.40, 534,503.70 and 178,812.60 is: 268,392.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,105.40 : 534,503.70 = 178,812.60 : x
  2. Step 2: Convert to fraction form
    356,105.40/534,503.70 = 178,812.60/x
  3. Step 3: Cross multiply
    356,105.40x = 534,503.70 × 178,812.60
  4. Step 4: Simplify right side
    356,105.40x = 95,575,996,306.62
  5. Step 5: Solve for x
    x = 95,575,996,306.62/356,105.40
  6. Step 6: Final answer
    x = 268,392.44

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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.