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Finding the Fourth Proportional to 70,954.45, 97,931.33 and 40,760.48

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Solution

The fourth proportional to 70,954.45, 97,931.33 and 40,760.48 is: 56,257.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,954.45 : 97,931.33 = 40,760.48 : x
  2. Step 2: Convert to fraction form
    70,954.45/97,931.33 = 40,760.48/x
  3. Step 3: Cross multiply
    70,954.45x = 97,931.33 × 40,760.48
  4. Step 4: Simplify right side
    70,954.45x = 3,991,728,017.84
  5. Step 5: Solve for x
    x = 3,991,728,017.84/70,954.45
  6. Step 6: Final answer
    x = 56,257.61

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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.