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Finding the Fourth Proportional to 67,670.98, 101,516.20 and 20,927.50

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Solution

The fourth proportional to 67,670.98, 101,516.20 and 20,927.50 is: 31,394.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,670.98 : 101,516.20 = 20,927.50 : x
  2. Step 2: Convert to fraction form
    67,670.98/101,516.20 = 20,927.50/x
  3. Step 3: Cross multiply
    67,670.98x = 101,516.20 × 20,927.50
  4. Step 4: Simplify right side
    67,670.98x = 2,124,480,275.50
  5. Step 5: Solve for x
    x = 2,124,480,275.50/67,670.98
  6. Step 6: Final answer
    x = 31,394.26

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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.