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Finding the Fourth Proportional to 70,212.70, 96,893.55 and 38,381.59

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Solution

The fourth proportional to 70,212.70, 96,893.55 and 38,381.59 is: 52,966.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,212.70 : 96,893.55 = 38,381.59 : x
  2. Step 2: Convert to fraction form
    70,212.70/96,893.55 = 38,381.59/x
  3. Step 3: Cross multiply
    70,212.70x = 96,893.55 × 38,381.59
  4. Step 4: Simplify right side
    70,212.70x = 3,718,928,267.51
  5. Step 5: Solve for x
    x = 3,718,928,267.51/70,212.70
  6. Step 6: Final answer
    x = 52,966.61

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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.