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Finding the Fourth Proportional to 669,397.44, 923,135.13 and 439,549.20

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Solution

The fourth proportional to 669,397.44, 923,135.13 and 439,549.20 is: 606,162.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,397.44 : 923,135.13 = 439,549.20 : x
  2. Step 2: Convert to fraction form
    669,397.44/923,135.13 = 439,549.20/x
  3. Step 3: Cross multiply
    669,397.44x = 923,135.13 × 439,549.20
  4. Step 4: Simplify right side
    669,397.44x = 405,763,307,883.40
  5. Step 5: Solve for x
    x = 405,763,307,883.40/669,397.44
  6. Step 6: Final answer
    x = 606,162.03

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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.