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Finding the Fourth Proportional to 68,062.74, 101,990.16 and 28,598.28

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Solution

The fourth proportional to 68,062.74, 101,990.16 and 28,598.28 is: 42,853.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    68,062.74 : 101,990.16 = 28,598.28 : x
  2. Step 2: Convert to fraction form
    68,062.74/101,990.16 = 28,598.28/x
  3. Step 3: Cross multiply
    68,062.74x = 101,990.16 × 28,598.28
  4. Step 4: Simplify right side
    68,062.74x = 2,916,743,152.92
  5. Step 5: Solve for x
    x = 2,916,743,152.92/68,062.74
  6. Step 6: Final answer
    x = 42,853.74

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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.