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Finding the Fourth Proportional to 376,717.60, 565,513.80 and 216,920.80

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Solution

The fourth proportional to 376,717.60, 565,513.80 and 216,920.80 is: 325,633.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    376,717.60 : 565,513.80 = 216,920.80 : x
  2. Step 2: Convert to fraction form
    376,717.60/565,513.80 = 216,920.80/x
  3. Step 3: Cross multiply
    376,717.60x = 565,513.80 × 216,920.80
  4. Step 4: Simplify right side
    376,717.60x = 122,671,705,907.04
  5. Step 5: Solve for x
    x = 122,671,705,907.04/376,717.60
  6. Step 6: Final answer
    x = 325,633.06

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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.