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Finding the Fourth Proportional to 83,309.58, 124,908.99 and 45,887.28

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Solution

The fourth proportional to 83,309.58, 124,908.99 and 45,887.28 is: 68,800.42

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,309.58 : 124,908.99 = 45,887.28 : x
  2. Step 2: Convert to fraction form
    83,309.58/124,908.99 = 45,887.28/x
  3. Step 3: Cross multiply
    83,309.58x = 124,908.99 × 45,887.28
  4. Step 4: Simplify right side
    83,309.58x = 5,731,733,798.65
  5. Step 5: Solve for x
    x = 5,731,733,798.65/83,309.58
  6. Step 6: Final answer
    x = 68,800.42

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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.