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Finding the Fourth Proportional to 74,571.44, 102,885.42 and 42,300.74

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Solution

The fourth proportional to 74,571.44, 102,885.42 and 42,300.74 is: 58,361.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,571.44 : 102,885.42 = 42,300.74 : x
  2. Step 2: Convert to fraction form
    74,571.44/102,885.42 = 42,300.74/x
  3. Step 3: Cross multiply
    74,571.44x = 102,885.42 × 42,300.74
  4. Step 4: Simplify right side
    74,571.44x = 4,352,129,401.21
  5. Step 5: Solve for x
    x = 4,352,129,401.21/74,571.44
  6. Step 6: Final answer
    x = 58,361.88

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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.