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Finding the Fourth Proportional to 669,400.04, 923,642.12 and 397,553.22

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Solution

The fourth proportional to 669,400.04, 923,642.12 and 397,553.22 is: 548,546.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    669,400.04 : 923,642.12 = 397,553.22 : x
  2. Step 2: Convert to fraction form
    669,400.04/923,642.12 = 397,553.22/x
  3. Step 3: Cross multiply
    669,400.04x = 923,642.12 × 397,553.22
  4. Step 4: Simplify right side
    669,400.04x = 367,196,899,927.51
  5. Step 5: Solve for x
    x = 367,196,899,927.51/669,400.04
  6. Step 6: Final answer
    x = 548,546.28

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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.