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Finding the Fourth Proportional to 543,185.24, 814,765.34 and 319,961.72

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Solution

The fourth proportional to 543,185.24, 814,765.34 and 319,961.72 is: 479,935.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    543,185.24 : 814,765.34 = 319,961.72 : x
  2. Step 2: Convert to fraction form
    543,185.24/814,765.34 = 319,961.72/x
  3. Step 3: Cross multiply
    543,185.24x = 814,765.34 × 319,961.72
  4. Step 4: Simplify right side
    543,185.24x = 260,693,719,582.79
  5. Step 5: Solve for x
    x = 260,693,719,582.79/543,185.24
  6. Step 6: Final answer
    x = 479,935.21

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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.