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Finding the Fourth Proportional to 216,931, 325,359.78 and 59,122.48

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Solution

The fourth proportional to 216,931, 325,359.78 and 59,122.48 is: 88,673.71

Step by Step Solution

  1. Step 1: Write the proportion equation
    216,931 : 325,359.78 = 59,122.48 : x
  2. Step 2: Convert to fraction form
    216,931/325,359.78 = 59,122.48/x
  3. Step 3: Cross multiply
    216,931x = 325,359.78 × 59,122.48
  4. Step 4: Simplify right side
    216,931x = 19,236,077,085.85
  5. Step 5: Solve for x
    x = 19,236,077,085.85/216,931
  6. Step 6: Final answer
    x = 88,673.71

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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.