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Finding the Fourth Proportional to 70,904.46, 97,846.90 and 38,639.37

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Solution

The fourth proportional to 70,904.46, 97,846.90 and 38,639.37 is: 53,321.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,904.46 : 97,846.90 = 38,639.37 : x
  2. Step 2: Convert to fraction form
    70,904.46/97,846.90 = 38,639.37/x
  3. Step 3: Cross multiply
    70,904.46x = 97,846.90 × 38,639.37
  4. Step 4: Simplify right side
    70,904.46x = 3,780,742,083.22
  5. Step 5: Solve for x
    x = 3,780,742,083.22/70,904.46
  6. Step 6: Final answer
    x = 53,321.64

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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.