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Finding the Fourth Proportional to 48,988.70, 68,739.70 and 48,988.70

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Solution

The fourth proportional to 48,988.70, 68,739.70 and 48,988.70 is: 68,739.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,988.70 : 68,739.70 = 48,988.70 : x
  2. Step 2: Convert to fraction form
    48,988.70/68,739.70 = 48,988.70/x
  3. Step 3: Cross multiply
    48,988.70x = 68,739.70 × 48,988.70
  4. Step 4: Simplify right side
    48,988.70x = 3,367,468,541.39
  5. Step 5: Solve for x
    x = 3,367,468,541.39/48,988.70
  6. Step 6: Final answer
    x = 68,739.70

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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.