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Finding the Fourth Proportional to 346,909.80, 519,327.90 and 206,596.20

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Solution

The fourth proportional to 346,909.80, 519,327.90 and 206,596.20 is: 309,276.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    346,909.80 : 519,327.90 = 206,596.20 : x
  2. Step 2: Convert to fraction form
    346,909.80/519,327.90 = 206,596.20/x
  3. Step 3: Cross multiply
    346,909.80x = 519,327.90 × 206,596.20
  4. Step 4: Simplify right side
    346,909.80x = 107,291,170,693.98
  5. Step 5: Solve for x
    x = 107,291,170,693.98/346,909.80
  6. Step 6: Final answer
    x = 309,276.85

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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.