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Finding the Fourth Proportional to 401,388.48, 602,087.04 and 120,908.16

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Solution

The fourth proportional to 401,388.48, 602,087.04 and 120,908.16 is: 181,363.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,388.48 : 602,087.04 = 120,908.16 : x
  2. Step 2: Convert to fraction form
    401,388.48/602,087.04 = 120,908.16/x
  3. Step 3: Cross multiply
    401,388.48x = 602,087.04 × 120,908.16
  4. Step 4: Simplify right side
    401,388.48x = 72,797,236,166.25
  5. Step 5: Solve for x
    x = 72,797,236,166.25/401,388.48
  6. Step 6: Final answer
    x = 181,363.54

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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.