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Finding the Fourth Proportional to 70,903.62, 97,845.08 and 39,072.51

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Solution

The fourth proportional to 70,903.62, 97,845.08 and 39,072.51 is: 53,919.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.62 : 97,845.08 = 39,072.51 : x
  2. Step 2: Convert to fraction form
    70,903.62/97,845.08 = 39,072.51/x
  3. Step 3: Cross multiply
    70,903.62x = 97,845.08 × 39,072.51
  4. Step 4: Simplify right side
    70,903.62x = 3,823,052,671.39
  5. Step 5: Solve for x
    x = 3,823,052,671.39/70,903.62
  6. Step 6: Final answer
    x = 53,919.01

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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.