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Finding the Fourth Proportional to 70,878.70, 97,869.63 and 48,265.12

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Solution

The fourth proportional to 70,878.70, 97,869.63 and 48,265.12 is: 66,644.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,878.70 : 97,869.63 = 48,265.12 : x
  2. Step 2: Convert to fraction form
    70,878.70/97,869.63 = 48,265.12/x
  3. Step 3: Cross multiply
    70,878.70x = 97,869.63 × 48,265.12
  4. Step 4: Simplify right side
    70,878.70x = 4,723,689,436.31
  5. Step 5: Solve for x
    x = 4,723,689,436.31/70,878.70
  6. Step 6: Final answer
    x = 66,644.70

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.