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Finding the Fourth Proportional to 62,973.12, 86,903.64 and 34,679.28

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Solution

The fourth proportional to 62,973.12, 86,903.64 and 34,679.28 is: 47,857.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    62,973.12 : 86,903.64 = 34,679.28 : x
  2. Step 2: Convert to fraction form
    62,973.12/86,903.64 = 34,679.28/x
  3. Step 3: Cross multiply
    62,973.12x = 86,903.64 × 34,679.28
  4. Step 4: Simplify right side
    62,973.12x = 3,013,755,664.58
  5. Step 5: Solve for x
    x = 3,013,755,664.58/62,973.12
  6. Step 6: Final answer
    x = 47,857.81

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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.