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Finding the Fourth Proportional to 70,899.03, 97,842.75 and 39,069.98

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Solution

The fourth proportional to 70,899.03, 97,842.75 and 39,069.98 is: 53,917.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,899.03 : 97,842.75 = 39,069.98 : x
  2. Step 2: Convert to fraction form
    70,899.03/97,842.75 = 39,069.98/x
  3. Step 3: Cross multiply
    70,899.03x = 97,842.75 × 39,069.98
  4. Step 4: Simplify right side
    70,899.03x = 3,822,713,796.43
  5. Step 5: Solve for x
    x = 3,822,713,796.43/70,899.03
  6. Step 6: Final answer
    x = 53,917.72

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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.