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Finding the Fourth Proportional to 70,903.87, 97,846.07 and 38,638.76

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Solution

The fourth proportional to 70,903.87, 97,846.07 and 38,638.76 is: 53,320.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,903.87 : 97,846.07 = 38,638.76 : x
  2. Step 2: Convert to fraction form
    70,903.87/97,846.07 = 38,638.76/x
  3. Step 3: Cross multiply
    70,903.87x = 97,846.07 × 38,638.76
  4. Step 4: Simplify right side
    70,903.87x = 3,780,650,867.09
  5. Step 5: Solve for x
    x = 3,780,650,867.09/70,903.87
  6. Step 6: Final answer
    x = 53,320.80

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Similar ratio
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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.