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Finding the Fourth Proportional to 70,584.74, 97,379.16 and 40,353.82

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Solution

The fourth proportional to 70,584.74, 97,379.16 and 40,353.82 is: 55,672.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,584.74 : 97,379.16 = 40,353.82 : x
  2. Step 2: Convert to fraction form
    70,584.74/97,379.16 = 40,353.82/x
  3. Step 3: Cross multiply
    70,584.74x = 97,379.16 × 40,353.82
  4. Step 4: Simplify right side
    70,584.74x = 3,929,621,094.39
  5. Step 5: Solve for x
    x = 3,929,621,094.39/70,584.74
  6. Step 6: Final answer
    x = 55,672.39

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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.