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Finding the Fourth Proportional to 70,414.79, 97,156.59 and 40,190.45

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Solution

The fourth proportional to 70,414.79, 97,156.59 and 40,190.45 is: 55,453.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,414.79 : 97,156.59 = 40,190.45 : x
  2. Step 2: Convert to fraction form
    70,414.79/97,156.59 = 40,190.45/x
  3. Step 3: Cross multiply
    70,414.79x = 97,156.59 × 40,190.45
  4. Step 4: Simplify right side
    70,414.79x = 3,904,767,072.57
  5. Step 5: Solve for x
    x = 3,904,767,072.57/70,414.79
  6. Step 6: Final answer
    x = 55,453.79

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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.