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Finding the Fourth Proportional to 481,794.78, 721,903.74 and 291,678.92

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Solution

The fourth proportional to 481,794.78, 721,903.74 and 291,678.92 is: 437,041.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    481,794.78 : 721,903.74 = 291,678.92 : x
  2. Step 2: Convert to fraction form
    481,794.78/721,903.74 = 291,678.92/x
  3. Step 3: Cross multiply
    481,794.78x = 721,903.74 × 291,678.92
  4. Step 4: Simplify right side
    481,794.78x = 210,564,106,932.39
  5. Step 5: Solve for x
    x = 210,564,106,932.39/481,794.78
  6. Step 6: Final answer
    x = 437,041.07

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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.