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Finding the Fourth Proportional to 70,897.36, 97,839.48 and 39,065.92

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Solution

The fourth proportional to 70,897.36, 97,839.48 and 39,065.92 is: 53,911.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,897.36 : 97,839.48 = 39,065.92 : x
  2. Step 2: Convert to fraction form
    70,897.36/97,839.48 = 39,065.92/x
  3. Step 3: Cross multiply
    70,897.36x = 97,839.48 × 39,065.92
  4. Step 4: Simplify right side
    70,897.36x = 3,822,189,298.52
  5. Step 5: Solve for x
    x = 3,822,189,298.52/70,897.36
  6. Step 6: Final answer
    x = 53,911.59

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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.