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Finding the Fourth Proportional to 70,907.30, 97,847.42 and 39,076.18

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Solution

The fourth proportional to 70,907.30, 97,847.42 and 39,076.18 is: 53,922.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,907.30 : 97,847.42 = 39,076.18 : x
  2. Step 2: Convert to fraction form
    70,907.30/97,847.42 = 39,076.18/x
  3. Step 3: Cross multiply
    70,907.30x = 97,847.42 × 39,076.18
  4. Step 4: Simplify right side
    70,907.30x = 3,823,503,396.46
  5. Step 5: Solve for x
    x = 3,823,503,396.46/70,907.30
  6. Step 6: Final answer
    x = 53,922.56

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1.5x scale

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.