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Finding the Fourth Proportional to 70,187.60, 96,847.74 and 39,973.51

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Solution

The fourth proportional to 70,187.60, 96,847.74 and 39,973.51 is: 55,157.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,187.60 : 96,847.74 = 39,973.51 : x
  2. Step 2: Convert to fraction form
    70,187.60/96,847.74 = 39,973.51/x
  3. Step 3: Cross multiply
    70,187.60x = 96,847.74 × 39,973.51
  4. Step 4: Simplify right side
    70,187.60x = 3,871,344,103.37
  5. Step 5: Solve for x
    x = 3,871,344,103.37/70,187.60
  6. Step 6: Final answer
    x = 55,157.09

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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.