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Finding the Fourth Proportional to 99,802.88, 149,703.90 and 40,624.52

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Solution

The fourth proportional to 99,802.88, 149,703.90 and 40,624.52 is: 60,936.61

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,802.88 : 149,703.90 = 40,624.52 : x
  2. Step 2: Convert to fraction form
    99,802.88/149,703.90 = 40,624.52/x
  3. Step 3: Cross multiply
    99,802.88x = 149,703.90 × 40,624.52
  4. Step 4: Simplify right side
    99,802.88x = 6,081,649,079.63
  5. Step 5: Solve for x
    x = 6,081,649,079.63/99,802.88
  6. Step 6: Final answer
    x = 60,936.61

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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.