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Finding the Fourth Proportional to 397,763.10, 596,644.65 and 319,031.10

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Solution

The fourth proportional to 397,763.10, 596,644.65 and 319,031.10 is: 478,546.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,763.10 : 596,644.65 = 319,031.10 : x
  2. Step 2: Convert to fraction form
    397,763.10/596,644.65 = 319,031.10/x
  3. Step 3: Cross multiply
    397,763.10x = 596,644.65 × 319,031.10
  4. Step 4: Simplify right side
    397,763.10x = 190,348,198,998.62
  5. Step 5: Solve for x
    x = 190,348,198,998.62/397,763.10
  6. Step 6: Final answer
    x = 478,546.65

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Similar ratio
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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.