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Finding the Fourth Proportional to 74,604.96, 102,943.90 and 42,334.56

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Solution

The fourth proportional to 74,604.96, 102,943.90 and 42,334.56 is: 58,415.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,604.96 : 102,943.90 = 42,334.56 : x
  2. Step 2: Convert to fraction form
    74,604.96/102,943.90 = 42,334.56/x
  3. Step 3: Cross multiply
    74,604.96x = 102,943.90 × 42,334.56
  4. Step 4: Simplify right side
    74,604.96x = 4,358,084,711.18
  5. Step 5: Solve for x
    x = 4,358,084,711.18/74,604.96
  6. Step 6: Final answer
    x = 58,415.48

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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.