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Finding the Fourth Proportional to 70,852.50, 97,776.45 and 39,021.39

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Solution

The fourth proportional to 70,852.50, 97,776.45 and 39,021.39 is: 53,849.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,852.50 : 97,776.45 = 39,021.39 : x
  2. Step 2: Convert to fraction form
    70,852.50/97,776.45 = 39,021.39/x
  3. Step 3: Cross multiply
    70,852.50x = 97,776.45 × 39,021.39
  4. Step 4: Simplify right side
    70,852.50x = 3,815,372,988.27
  5. Step 5: Solve for x
    x = 3,815,372,988.27/70,852.50
  6. Step 6: Final answer
    x = 53,849.52

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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.