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Finding the Fourth Proportional to 70,954.42, 97,917.78 and 39,124.48

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Solution

The fourth proportional to 70,954.42, 97,917.78 and 39,124.48 is: 53,992.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.42 : 97,917.78 = 39,124.48 : x
  2. Step 2: Convert to fraction form
    70,954.42/97,917.78 = 39,124.48/x
  3. Step 3: Cross multiply
    70,954.42x = 97,917.78 × 39,124.48
  4. Step 4: Simplify right side
    70,954.42x = 3,830,982,225.25
  5. Step 5: Solve for x
    x = 3,830,982,225.25/70,954.42
  6. Step 6: Final answer
    x = 53,992.16

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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.