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Finding the Fourth Proportional to 60,232.71, 90,361.32 and 20,784.69

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Solution

The fourth proportional to 60,232.71, 90,361.32 and 20,784.69 is: 31,181.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,232.71 : 90,361.32 = 20,784.69 : x
  2. Step 2: Convert to fraction form
    60,232.71/90,361.32 = 20,784.69/x
  3. Step 3: Cross multiply
    60,232.71x = 90,361.32 × 20,784.69
  4. Step 4: Simplify right side
    60,232.71x = 1,878,132,024.19
  5. Step 5: Solve for x
    x = 1,878,132,024.19/60,232.71
  6. Step 6: Final answer
    x = 31,181.26

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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.