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Finding the Fourth Proportional to 76,608.88, 114,889.95 and 61,580.35

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Solution

The fourth proportional to 76,608.88, 114,889.95 and 61,580.35 is: 92,351.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    76,608.88 : 114,889.95 = 61,580.35 : x
  2. Step 2: Convert to fraction form
    76,608.88/114,889.95 = 61,580.35/x
  3. Step 3: Cross multiply
    76,608.88x = 114,889.95 × 61,580.35
  4. Step 4: Simplify right side
    76,608.88x = 7,074,963,332.48
  5. Step 5: Solve for x
    x = 7,074,963,332.48/76,608.88
  6. Step 6: Final answer
    x = 92,351.74

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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.