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Finding the Fourth Proportional to 131,661.04, 197,471.28 and 42,914.32

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Solution

The fourth proportional to 131,661.04, 197,471.28 and 42,914.32 is: 64,364.87

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,661.04 : 197,471.28 = 42,914.32 : x
  2. Step 2: Convert to fraction form
    131,661.04/197,471.28 = 42,914.32/x
  3. Step 3: Cross multiply
    131,661.04x = 197,471.28 × 42,914.32
  4. Step 4: Simplify right side
    131,661.04x = 8,474,345,700.73
  5. Step 5: Solve for x
    x = 8,474,345,700.73/131,661.04
  6. Step 6: Final answer
    x = 64,364.87

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.