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Finding the Fourth Proportional to 70,912.14, 97,858.24 and 39,081.07

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Solution

The fourth proportional to 70,912.14, 97,858.24 and 39,081.07 is: 53,931.59

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,912.14 : 97,858.24 = 39,081.07 : x
  2. Step 2: Convert to fraction form
    70,912.14/97,858.24 = 39,081.07/x
  3. Step 3: Cross multiply
    70,912.14x = 97,858.24 × 39,081.07
  4. Step 4: Simplify right side
    70,912.14x = 3,824,404,727.52
  5. Step 5: Solve for x
    x = 3,824,404,727.52/70,912.14
  6. Step 6: Final answer
    x = 53,931.59

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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.