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Finding the Fourth Proportional to 655,194.72, 903,815.28 and 437,777.76

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Solution

The fourth proportional to 655,194.72, 903,815.28 and 437,777.76 is: 603,897.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    655,194.72 : 903,815.28 = 437,777.76 : x
  2. Step 2: Convert to fraction form
    655,194.72/903,815.28 = 437,777.76/x
  3. Step 3: Cross multiply
    655,194.72x = 903,815.28 × 437,777.76
  4. Step 4: Simplify right side
    655,194.72x = 395,670,228,732.17
  5. Step 5: Solve for x
    x = 395,670,228,732.17/655,194.72
  6. Step 6: Final answer
    x = 603,897.16

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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.