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Finding the Fourth Proportional to 202,549.86, 279,518.82 and 113,125.86

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Solution

The fourth proportional to 202,549.86, 279,518.82 and 113,125.86 is: 156,113.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    202,549.86 : 279,518.82 = 113,125.86 : x
  2. Step 2: Convert to fraction form
    202,549.86/279,518.82 = 113,125.86/x
  3. Step 3: Cross multiply
    202,549.86x = 279,518.82 × 113,125.86
  4. Step 4: Simplify right side
    202,549.86x = 31,620,806,898.69
  5. Step 5: Solve for x
    x = 31,620,806,898.69/202,549.86
  6. Step 6: Final answer
    x = 156,113.69

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.