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Finding the Fourth Proportional to 59,785.88, 89,257.70 and 45,671.48

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Solution

The fourth proportional to 59,785.88, 89,257.70 and 45,671.48 is: 68,185.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    59,785.88 : 89,257.70 = 45,671.48 : x
  2. Step 2: Convert to fraction form
    59,785.88/89,257.70 = 45,671.48/x
  3. Step 3: Cross multiply
    59,785.88x = 89,257.70 × 45,671.48
  4. Step 4: Simplify right side
    59,785.88x = 4,076,531,260.40
  5. Step 5: Solve for x
    x = 4,076,531,260.40/59,785.88
  6. Step 6: Final answer
    x = 68,185.52

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Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.