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Finding the Fourth Proportional to 696,208.50, 960,767.73 and 394,402.50

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Solution

The fourth proportional to 696,208.50, 960,767.73 and 394,402.50 is: 544,275.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    696,208.50 : 960,767.73 = 394,402.50 : x
  2. Step 2: Convert to fraction form
    696,208.50/960,767.73 = 394,402.50/x
  3. Step 3: Cross multiply
    696,208.50x = 960,767.73 × 394,402.50
  4. Step 4: Simplify right side
    696,208.50x = 378,929,194,631.33
  5. Step 5: Solve for x
    x = 378,929,194,631.33/696,208.50
  6. Step 6: Final answer
    x = 544,275.45

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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.