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Finding the Fourth Proportional to 67,856.60, 93,628.08 and 39,175.76

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Solution

The fourth proportional to 67,856.60, 93,628.08 and 39,175.76 is: 54,054.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,856.60 : 93,628.08 = 39,175.76 : x
  2. Step 2: Convert to fraction form
    67,856.60/93,628.08 = 39,175.76/x
  3. Step 3: Cross multiply
    67,856.60x = 93,628.08 × 39,175.76
  4. Step 4: Simplify right side
    67,856.60x = 3,667,951,572.32
  5. Step 5: Solve for x
    x = 3,667,951,572.32/67,856.60
  6. Step 6: Final answer
    x = 54,054.46

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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.