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Finding the Fourth Proportional to 356,445.80, 534,668.70 and 146,234.60

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Solution

The fourth proportional to 356,445.80, 534,668.70 and 146,234.60 is: 219,351.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,445.80 : 534,668.70 = 146,234.60 : x
  2. Step 2: Convert to fraction form
    356,445.80/534,668.70 = 146,234.60/x
  3. Step 3: Cross multiply
    356,445.80x = 534,668.70 × 146,234.60
  4. Step 4: Simplify right side
    356,445.80x = 78,187,063,477.02
  5. Step 5: Solve for x
    x = 78,187,063,477.02/356,445.80
  6. Step 6: Final answer
    x = 219,351.90

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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.