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Finding the Fourth Proportional to 547,775.90, 821,663.85 and 397,310.30

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Solution

The fourth proportional to 547,775.90, 821,663.85 and 397,310.30 is: 595,965.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    547,775.90 : 821,663.85 = 397,310.30 : x
  2. Step 2: Convert to fraction form
    547,775.90/821,663.85 = 397,310.30/x
  3. Step 3: Cross multiply
    547,775.90x = 821,663.85 × 397,310.30
  4. Step 4: Simplify right side
    547,775.90x = 326,455,510,742.66
  5. Step 5: Solve for x
    x = 326,455,510,742.66/547,775.90
  6. Step 6: Final answer
    x = 595,965.45

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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.