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Finding the Fourth Proportional to 70,684.61, 97,546.16 and 38,856.47

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Solution

The fourth proportional to 70,684.61, 97,546.16 and 38,856.47 is: 53,622.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,684.61 : 97,546.16 = 38,856.47 : x
  2. Step 2: Convert to fraction form
    70,684.61/97,546.16 = 38,856.47/x
  3. Step 3: Cross multiply
    70,684.61x = 97,546.16 × 38,856.47
  4. Step 4: Simplify right side
    70,684.61x = 3,790,299,245.37
  5. Step 5: Solve for x
    x = 3,790,299,245.37/70,684.61
  6. Step 6: Final answer
    x = 53,622.69

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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.