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Finding the Fourth Proportional to 48,938.70, 68,669.70 and 48,938.70

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Solution

The fourth proportional to 48,938.70, 68,669.70 and 48,938.70 is: 68,669.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,938.70 : 68,669.70 = 48,938.70 : x
  2. Step 2: Convert to fraction form
    48,938.70/68,669.70 = 48,938.70/x
  3. Step 3: Cross multiply
    48,938.70x = 68,669.70 × 48,938.70
  4. Step 4: Simplify right side
    48,938.70x = 3,360,605,847.39
  5. Step 5: Solve for x
    x = 3,360,605,847.39/48,938.70
  6. Step 6: Final answer
    x = 68,669.70

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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.