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Finding the Fourth Proportional to 382,368.65, 573,217.63 and 145,553.81

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Solution

The fourth proportional to 382,368.65, 573,217.63 and 145,553.81 is: 218,203.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    382,368.65 : 573,217.63 = 145,553.81 : x
  2. Step 2: Convert to fraction form
    382,368.65/573,217.63 = 145,553.81/x
  3. Step 3: Cross multiply
    382,368.65x = 573,217.63 × 145,553.81
  4. Step 4: Simplify right side
    382,368.65x = 83,434,006,775.70
  5. Step 5: Solve for x
    x = 83,434,006,775.70/382,368.65
  6. Step 6: Final answer
    x = 218,203.06

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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.