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Finding the Fourth Proportional to 70,185.80, 96,856.27 and 39,971.14

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Solution

The fourth proportional to 70,185.80, 96,856.27 and 39,971.14 is: 55,160.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,185.80 : 96,856.27 = 39,971.14 : x
  2. Step 2: Convert to fraction form
    70,185.80/96,856.27 = 39,971.14/x
  3. Step 3: Cross multiply
    70,185.80x = 96,856.27 × 39,971.14
  4. Step 4: Simplify right side
    70,185.80x = 3,871,455,185.98
  5. Step 5: Solve for x
    x = 3,871,455,185.98/70,185.80
  6. Step 6: Final answer
    x = 55,160.09

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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.