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Finding the Fourth Proportional to 76,415.58, 114,580.71 and 60,721.02

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Solution

The fourth proportional to 76,415.58, 114,580.71 and 60,721.02 is: 91,047.63

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,415.58 : 114,580.71 = 60,721.02 : x
  2. Step 2: Convert to fraction form
    76,415.58/114,580.71 = 60,721.02/x
  3. Step 3: Cross multiply
    76,415.58x = 114,580.71 × 60,721.02
  4. Step 4: Simplify right side
    76,415.58x = 6,957,457,583.52
  5. Step 5: Solve for x
    x = 6,957,457,583.52/76,415.58
  6. Step 6: Final answer
    x = 91,047.63

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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.