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Finding the Fourth Proportional to 547,817.80, 821,726.70 and 193,232.20

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Solution

The fourth proportional to 547,817.80, 821,726.70 and 193,232.20 is: 289,848.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,817.80 : 821,726.70 = 193,232.20 : x
  2. Step 2: Convert to fraction form
    547,817.80/821,726.70 = 193,232.20/x
  3. Step 3: Cross multiply
    547,817.80x = 821,726.70 × 193,232.20
  4. Step 4: Simplify right side
    547,817.80x = 158,784,058,039.74
  5. Step 5: Solve for x
    x = 158,784,058,039.74/547,817.80
  6. Step 6: Final answer
    x = 289,848.30

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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.