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Finding the Fourth Proportional to 407,694.06, 611,388 and 141,390.36

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Solution

The fourth proportional to 407,694.06, 611,388 and 141,390.36 is: 212,032.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,694.06 : 611,388 = 141,390.36 : x
  2. Step 2: Convert to fraction form
    407,694.06/611,388 = 141,390.36/x
  3. Step 3: Cross multiply
    407,694.06x = 611,388 × 141,390.36
  4. Step 4: Simplify right side
    407,694.06x = 86,444,369,419.68
  5. Step 5: Solve for x
    x = 86,444,369,419.68/407,694.06
  6. Step 6: Final answer
    x = 212,032.45

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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.