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Finding the Fourth Proportional to 356,321.80, 534,785.10 and 146,110.60

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Solution

The fourth proportional to 356,321.80, 534,785.10 and 146,110.60 is: 219,289.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,321.80 : 534,785.10 = 146,110.60 : x
  2. Step 2: Convert to fraction form
    356,321.80/534,785.10 = 146,110.60/x
  3. Step 3: Cross multiply
    356,321.80x = 534,785.10 × 146,110.60
  4. Step 4: Simplify right side
    356,321.80x = 78,137,771,832.06
  5. Step 5: Solve for x
    x = 78,137,771,832.06/356,321.80
  6. Step 6: Final answer
    x = 219,289.90

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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.