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Finding the Fourth Proportional to 333,995.81, 500,994.73 and 81,276.34

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Solution

The fourth proportional to 333,995.81, 500,994.73 and 81,276.34 is: 121,914.76

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,995.81 : 500,994.73 = 81,276.34 : x
  2. Step 2: Convert to fraction form
    333,995.81/500,994.73 = 81,276.34/x
  3. Step 3: Cross multiply
    333,995.81x = 500,994.73 × 81,276.34
  4. Step 4: Simplify right side
    333,995.81x = 40,719,018,013.69
  5. Step 5: Solve for x
    x = 40,719,018,013.69/333,995.81
  6. Step 6: Final answer
    x = 121,914.76

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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.