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Finding the Fourth Proportional to 559,939.60, 839,909.40 and 347,363.20

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Solution

The fourth proportional to 559,939.60, 839,909.40 and 347,363.20 is: 521,044.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,939.60 : 839,909.40 = 347,363.20 : x
  2. Step 2: Convert to fraction form
    559,939.60/839,909.40 = 347,363.20/x
  3. Step 3: Cross multiply
    559,939.60x = 839,909.40 × 347,363.20
  4. Step 4: Simplify right side
    559,939.60x = 291,753,616,894.08
  5. Step 5: Solve for x
    x = 291,753,616,894.08/559,939.60
  6. Step 6: Final answer
    x = 521,044.80

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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.