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Finding the Fourth Proportional to 416,727.40, 575,083.78 and 225,740.74

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Solution

The fourth proportional to 416,727.40, 575,083.78 and 225,740.74 is: 311,522.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    416,727.40 : 575,083.78 = 225,740.74 : x
  2. Step 2: Convert to fraction form
    416,727.40/575,083.78 = 225,740.74/x
  3. Step 3: Cross multiply
    416,727.40x = 575,083.78 × 225,740.74
  4. Step 4: Simplify right side
    416,727.40x = 129,819,838,059.20
  5. Step 5: Solve for x
    x = 129,819,838,059.20/416,727.40
  6. Step 6: Final answer
    x = 311,522.20

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.