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Finding the Fourth Proportional to 70,238.84, 96,928.26 and 38,407.64

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Solution

The fourth proportional to 70,238.84, 96,928.26 and 38,407.64 is: 53,001.81

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,238.84 : 96,928.26 = 38,407.64 : x
  2. Step 2: Convert to fraction form
    70,238.84/96,928.26 = 38,407.64/x
  3. Step 3: Cross multiply
    70,238.84x = 96,928.26 × 38,407.64
  4. Step 4: Simplify right side
    70,238.84x = 3,722,785,715.91
  5. Step 5: Solve for x
    x = 3,722,785,715.91/70,238.84
  6. Step 6: Final answer
    x = 53,001.81

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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.