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Finding the Fourth Proportional to 468,763.12, 703,039.40 and 215,801.20

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Solution

The fourth proportional to 468,763.12, 703,039.40 and 215,801.20 is: 323,653.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    468,763.12 : 703,039.40 = 215,801.20 : x
  2. Step 2: Convert to fraction form
    468,763.12/703,039.40 = 215,801.20/x
  3. Step 3: Cross multiply
    468,763.12x = 703,039.40 × 215,801.20
  4. Step 4: Simplify right side
    468,763.12x = 151,716,746,167.28
  5. Step 5: Solve for x
    x = 151,716,746,167.28/468,763.12
  6. Step 6: Final answer
    x = 323,653.33

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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.