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Finding the Fourth Proportional to 207,490.81, 310,737.24 and 118,474.51

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Solution

The fourth proportional to 207,490.81, 310,737.24 and 118,474.51 is: 177,426.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    207,490.81 : 310,737.24 = 118,474.51 : x
  2. Step 2: Convert to fraction form
    207,490.81/310,737.24 = 118,474.51/x
  3. Step 3: Cross multiply
    207,490.81x = 310,737.24 × 118,474.51
  4. Step 4: Simplify right side
    207,490.81x = 36,814,442,247.75
  5. Step 5: Solve for x
    x = 36,814,442,247.75/207,490.81
  6. Step 6: Final answer
    x = 177,426.86

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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.