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Finding the Fourth Proportional to 137,718.90, 193,068.90 and 137,718.90

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Solution

The fourth proportional to 137,718.90, 193,068.90 and 137,718.90 is: 193,068.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    137,718.90 : 193,068.90 = 137,718.90 : x
  2. Step 2: Convert to fraction form
    137,718.90/193,068.90 = 137,718.90/x
  3. Step 3: Cross multiply
    137,718.90x = 193,068.90 × 137,718.90
  4. Step 4: Simplify right side
    137,718.90x = 26,589,236,532.21
  5. Step 5: Solve for x
    x = 26,589,236,532.21/137,718.90
  6. Step 6: Final answer
    x = 193,068.90

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Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.