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Finding the Fourth Proportional to 70,530.17, 97,358.74 and 47,879.29

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Solution

The fourth proportional to 70,530.17, 97,358.74 and 47,879.29 is: 66,091.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,530.17 : 97,358.74 = 47,879.29 : x
  2. Step 2: Convert to fraction form
    70,530.17/97,358.74 = 47,879.29/x
  3. Step 3: Cross multiply
    70,530.17x = 97,358.74 × 47,879.29
  4. Step 4: Simplify right side
    70,530.17x = 4,661,466,983.40
  5. Step 5: Solve for x
    x = 4,661,466,983.40/70,530.17
  6. Step 6: Final answer
    x = 66,091.81

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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.