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Finding the Fourth Proportional to 559,853.55, 839,780.33 and 419,885.55

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Solution

The fourth proportional to 559,853.55, 839,780.33 and 419,885.55 is: 629,828.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    559,853.55 : 839,780.33 = 419,885.55 : x
  2. Step 2: Convert to fraction form
    559,853.55/839,780.33 = 419,885.55/x
  3. Step 3: Cross multiply
    559,853.55x = 839,780.33 × 419,885.55
  4. Step 4: Simplify right side
    559,853.55x = 352,611,623,641.80
  5. Step 5: Solve for x
    x = 352,611,623,641.80/559,853.55
  6. Step 6: Final answer
    x = 629,828.33

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Half scale
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Double scale
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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.