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Finding the Fourth Proportional to 137,887.95, 206,876.49 and 67,718.05

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Solution

The fourth proportional to 137,887.95, 206,876.49 and 67,718.05 is: 101,598.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,887.95 : 206,876.49 = 67,718.05 : x
  2. Step 2: Convert to fraction form
    137,887.95/206,876.49 = 67,718.05/x
  3. Step 3: Cross multiply
    137,887.95x = 206,876.49 × 67,718.05
  4. Step 4: Simplify right side
    137,887.95x = 14,009,272,493.64
  5. Step 5: Solve for x
    x = 14,009,272,493.64/137,887.95
  6. Step 6: Final answer
    x = 101,598.96

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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.