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Finding the Fourth Proportional to 70,957.35, 97,921.31 and 39,125.97

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Solution

The fourth proportional to 70,957.35, 97,921.31 and 39,125.97 is: 53,993.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,957.35 : 97,921.31 = 39,125.97 : x
  2. Step 2: Convert to fraction form
    70,957.35/97,921.31 = 39,125.97/x
  3. Step 3: Cross multiply
    70,957.35x = 97,921.31 × 39,125.97
  4. Step 4: Simplify right side
    70,957.35x = 3,831,266,041.79
  5. Step 5: Solve for x
    x = 3,831,266,041.79/70,957.35
  6. Step 6: Final answer
    x = 53,993.93

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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.