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Finding the Fourth Proportional to 70,932.65, 97,887.71 and 39,102.68

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Solution

The fourth proportional to 70,932.65, 97,887.71 and 39,102.68 is: 53,962.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,932.65 : 97,887.71 = 39,102.68 : x
  2. Step 2: Convert to fraction form
    70,932.65/97,887.71 = 39,102.68/x
  3. Step 3: Cross multiply
    70,932.65x = 97,887.71 × 39,102.68
  4. Step 4: Simplify right side
    70,932.65x = 3,827,672,142.54
  5. Step 5: Solve for x
    x = 3,827,672,142.54/70,932.65
  6. Step 6: Final answer
    x = 53,962.07

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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.