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Finding the Fourth Proportional to 70,984.16, 97,958.36 and 39,153.56

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Solution

The fourth proportional to 70,984.16, 97,958.36 and 39,153.56 is: 54,032.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,984.16 : 97,958.36 = 39,153.56 : x
  2. Step 2: Convert to fraction form
    70,984.16/97,958.36 = 39,153.56/x
  3. Step 3: Cross multiply
    70,984.16x = 97,958.36 × 39,153.56
  4. Step 4: Simplify right side
    70,984.16x = 3,835,418,525.76
  5. Step 5: Solve for x
    x = 3,835,418,525.76/70,984.16
  6. Step 6: Final answer
    x = 54,032.03

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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.