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Finding the Fourth Proportional to 109,664.80, 151,336.02 and 59,363.80

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Solution

The fourth proportional to 109,664.80, 151,336.02 and 59,363.80 is: 81,921.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,664.80 : 151,336.02 = 59,363.80 : x
  2. Step 2: Convert to fraction form
    109,664.80/151,336.02 = 59,363.80/x
  3. Step 3: Cross multiply
    109,664.80x = 151,336.02 × 59,363.80
  4. Step 4: Simplify right side
    109,664.80x = 8,983,881,224.08
  5. Step 5: Solve for x
    x = 8,983,881,224.08/109,664.80
  6. Step 6: Final answer
    x = 81,921.28

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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.