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Finding the Fourth Proportional to 93,978, 129,677.72 and 51,525.36

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Solution

The fourth proportional to 93,978, 129,677.72 and 51,525.36 is: 71,098.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,978 : 129,677.72 = 51,525.36 : x
  2. Step 2: Convert to fraction form
    93,978/129,677.72 = 51,525.36/x
  3. Step 3: Cross multiply
    93,978x = 129,677.72 × 51,525.36
  4. Step 4: Simplify right side
    93,978x = 6,681,691,206.98
  5. Step 5: Solve for x
    x = 6,681,691,206.98/93,978
  6. Step 6: Final answer
    x = 71,098.46

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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.