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Finding the Fourth Proportional to 42,364.81, 63,447.01 and 36,787.86

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Solution

The fourth proportional to 42,364.81, 63,447.01 and 36,787.86 is: 55,094.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    42,364.81 : 63,447.01 = 36,787.86 : x
  2. Step 2: Convert to fraction form
    42,364.81/63,447.01 = 36,787.86/x
  3. Step 3: Cross multiply
    42,364.81x = 63,447.01 × 36,787.86
  4. Step 4: Simplify right side
    42,364.81x = 2,334,079,629.33
  5. Step 5: Solve for x
    x = 2,334,079,629.33/42,364.81
  6. Step 6: Final answer
    x = 55,094.77

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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.