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Finding the Fourth Proportional to 210,937.52, 316,356.42 and 77,745.44

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Solution

The fourth proportional to 210,937.52, 316,356.42 and 77,745.44 is: 116,599.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    210,937.52 : 316,356.42 = 77,745.44 : x
  2. Step 2: Convert to fraction form
    210,937.52/316,356.42 = 77,745.44/x
  3. Step 3: Cross multiply
    210,937.52x = 316,356.42 × 77,745.44
  4. Step 4: Simplify right side
    210,937.52x = 24,595,269,069.72
  5. Step 5: Solve for x
    x = 24,595,269,069.72/210,937.52
  6. Step 6: Final answer
    x = 116,599.78

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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.