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Finding the Fourth Proportional to 333,995.31, 500,993.98 and 81,275.84

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Solution

The fourth proportional to 333,995.31, 500,993.98 and 81,275.84 is: 121,914.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,995.31 : 500,993.98 = 81,275.84 : x
  2. Step 2: Convert to fraction form
    333,995.31/500,993.98 = 81,275.84/x
  3. Step 3: Cross multiply
    333,995.31x = 500,993.98 × 81,275.84
  4. Step 4: Simplify right side
    333,995.31x = 40,718,705,730.01
  5. Step 5: Solve for x
    x = 40,718,705,730.01/333,995.31
  6. Step 6: Final answer
    x = 121,914.00

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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.