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Finding the Fourth Proportional to 70,163.47, 105,248.85 and 35,091.28

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Solution

The fourth proportional to 70,163.47, 105,248.85 and 35,091.28 is: 52,638.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,163.47 : 105,248.85 = 35,091.28 : x
  2. Step 2: Convert to fraction form
    70,163.47/105,248.85 = 35,091.28/x
  3. Step 3: Cross multiply
    70,163.47x = 105,248.85 × 35,091.28
  4. Step 4: Simplify right side
    70,163.47x = 3,693,316,865.03
  5. Step 5: Solve for x
    x = 3,693,316,865.03/70,163.47
  6. Step 6: Final answer
    x = 52,638.74

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.