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Finding the Fourth Proportional to 70,890.93, 97,829.91 and 39,059.69

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Solution

The fourth proportional to 70,890.93, 97,829.91 and 39,059.69 is: 53,902.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,890.93 : 97,829.91 = 39,059.69 : x
  2. Step 2: Convert to fraction form
    70,890.93/97,829.91 = 39,059.69/x
  3. Step 3: Cross multiply
    70,890.93x = 97,829.91 × 39,059.69
  4. Step 4: Simplify right side
    70,890.93x = 3,821,205,468.18
  5. Step 5: Solve for x
    x = 3,821,205,468.18/70,890.93
  6. Step 6: Final answer
    x = 53,902.60

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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.