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Finding the Fourth Proportional to 70,888.67, 97,828.16 and 39,057.56

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Solution

The fourth proportional to 70,888.67, 97,828.16 and 39,057.56 is: 53,900.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,888.67 : 97,828.16 = 39,057.56 : x
  2. Step 2: Convert to fraction form
    70,888.67/97,828.16 = 39,057.56/x
  3. Step 3: Cross multiply
    70,888.67x = 97,828.16 × 39,057.56
  4. Step 4: Simplify right side
    70,888.67x = 3,820,928,911.32
  5. Step 5: Solve for x
    x = 3,820,928,911.32/70,888.67
  6. Step 6: Final answer
    x = 53,900.42

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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.