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Finding the Fourth Proportional to 619,700.46, 929,813.13 and 338,889.66

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Solution

The fourth proportional to 619,700.46, 929,813.13 and 338,889.66 is: 508,478.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    619,700.46 : 929,813.13 = 338,889.66 : x
  2. Step 2: Convert to fraction form
    619,700.46/929,813.13 = 338,889.66/x
  3. Step 3: Cross multiply
    619,700.46x = 929,813.13 × 338,889.66
  4. Step 4: Simplify right side
    619,700.46x = 315,104,055,489.24
  5. Step 5: Solve for x
    x = 315,104,055,489.24/619,700.46
  6. Step 6: Final answer
    x = 508,478.01

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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.