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Finding the Fourth Proportional to 76,725.65, 105,881.36 and 44,900.61

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Solution

The fourth proportional to 76,725.65, 105,881.36 and 44,900.61 is: 61,962.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,725.65 : 105,881.36 = 44,900.61 : x
  2. Step 2: Convert to fraction form
    76,725.65/105,881.36 = 44,900.61/x
  3. Step 3: Cross multiply
    76,725.65x = 105,881.36 × 44,900.61
  4. Step 4: Simplify right side
    76,725.65x = 4,754,137,427.13
  5. Step 5: Solve for x
    x = 4,754,137,427.13/76,725.65
  6. Step 6: Final answer
    x = 61,962.82

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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.