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Finding the Fourth Proportional to 104,803.31, 144,627.70 and 57,056.56

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Solution

The fourth proportional to 104,803.31, 144,627.70 and 57,056.56 is: 78,737.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,803.31 : 144,627.70 = 57,056.56 : x
  2. Step 2: Convert to fraction form
    104,803.31/144,627.70 = 57,056.56/x
  3. Step 3: Cross multiply
    104,803.31x = 144,627.70 × 57,056.56
  4. Step 4: Simplify right side
    104,803.31x = 8,251,959,042.71
  5. Step 5: Solve for x
    x = 8,251,959,042.71/104,803.31
  6. Step 6: Final answer
    x = 78,737.58

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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.