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Finding the Fourth Proportional to 519,937.56, 779,934.15 and 145,989.72

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Solution

The fourth proportional to 519,937.56, 779,934.15 and 145,989.72 is: 218,992.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,937.56 : 779,934.15 = 145,989.72 : x
  2. Step 2: Convert to fraction form
    519,937.56/779,934.15 = 145,989.72/x
  3. Step 3: Cross multiply
    519,937.56x = 779,934.15 × 145,989.72
  4. Step 4: Simplify right side
    519,937.56x = 113,862,368,176.94
  5. Step 5: Solve for x
    x = 113,862,368,176.94/519,937.56
  6. Step 6: Final answer
    x = 218,992.39

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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.