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Finding the Fourth Proportional to 70,578.88, 97,386.27 and 39,951.82

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Solution

The fourth proportional to 70,578.88, 97,386.27 and 39,951.82 is: 55,126.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,578.88 : 97,386.27 = 39,951.82 : x
  2. Step 2: Convert to fraction form
    70,578.88/97,386.27 = 39,951.82/x
  3. Step 3: Cross multiply
    70,578.88x = 97,386.27 × 39,951.82
  4. Step 4: Simplify right side
    70,578.88x = 3,890,758,729.51
  5. Step 5: Solve for x
    x = 3,890,758,729.51/70,578.88
  6. Step 6: Final answer
    x = 55,126.39

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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.