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Finding the Fourth Proportional to 70,866.42, 97,796.31 and 39,035.43

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Solution

The fourth proportional to 70,866.42, 97,796.31 and 39,035.43 is: 53,869.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,866.42 : 97,796.31 = 39,035.43 : x
  2. Step 2: Convert to fraction form
    70,866.42/97,796.31 = 39,035.43/x
  3. Step 3: Cross multiply
    70,866.42x = 97,796.31 × 39,035.43
  4. Step 4: Simplify right side
    70,866.42x = 3,817,521,013.26
  5. Step 5: Solve for x
    x = 3,817,521,013.26/70,866.42
  6. Step 6: Final answer
    x = 53,869.25

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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.