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Finding the Fourth Proportional to 70,864.74, 97,679.35 and 47,887.37

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Solution

The fourth proportional to 70,864.74, 97,679.35 and 47,887.37 is: 66,007.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,864.74 : 97,679.35 = 47,887.37 : x
  2. Step 2: Convert to fraction form
    70,864.74/97,679.35 = 47,887.37/x
  3. Step 3: Cross multiply
    70,864.74x = 97,679.35 × 47,887.37
  4. Step 4: Simplify right side
    70,864.74x = 4,677,607,112.57
  5. Step 5: Solve for x
    x = 4,677,607,112.57/70,864.74
  6. Step 6: Final answer
    x = 66,007.54

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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.