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Finding the Fourth Proportional to 584,456.80, 876,685.20 and 210,431.20

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Solution

The fourth proportional to 584,456.80, 876,685.20 and 210,431.20 is: 315,646.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    584,456.80 : 876,685.20 = 210,431.20 : x
  2. Step 2: Convert to fraction form
    584,456.80/876,685.20 = 210,431.20/x
  3. Step 3: Cross multiply
    584,456.80x = 876,685.20 × 210,431.20
  4. Step 4: Simplify right side
    584,456.80x = 184,481,918,658.24
  5. Step 5: Solve for x
    x = 184,481,918,658.24/584,456.80
  6. Step 6: Final answer
    x = 315,646.80

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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.