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Finding the Fourth Proportional to 333,781.58, 500,667.71 and 81,064.01

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Solution

The fourth proportional to 333,781.58, 500,667.71 and 81,064.01 is: 121,594.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    333,781.58 : 500,667.71 = 81,064.01 : x
  2. Step 2: Convert to fraction form
    333,781.58/500,667.71 = 81,064.01/x
  3. Step 3: Cross multiply
    333,781.58x = 500,667.71 × 81,064.01
  4. Step 4: Simplify right side
    333,781.58x = 40,586,129,341.46
  5. Step 5: Solve for x
    x = 40,586,129,341.46/333,781.58
  6. Step 6: Final answer
    x = 121,594.88

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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.