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Finding the Fourth Proportional to 356,000.20, 534,000.30 and 343,558.60

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Solution

The fourth proportional to 356,000.20, 534,000.30 and 343,558.60 is: 515,337.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    356,000.20 : 534,000.30 = 343,558.60 : x
  2. Step 2: Convert to fraction form
    356,000.20/534,000.30 = 343,558.60/x
  3. Step 3: Cross multiply
    356,000.20x = 534,000.30 × 343,558.60
  4. Step 4: Simplify right side
    356,000.20x = 183,460,395,467.58
  5. Step 5: Solve for x
    x = 183,460,395,467.58/356,000.20
  6. Step 6: Final answer
    x = 515,337.90

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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.