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Finding the Fourth Proportional to 401,187.53, 602,530.79 and 353,173.16

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Solution

The fourth proportional to 401,187.53, 602,530.79 and 353,173.16 is: 530,419.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,187.53 : 602,530.79 = 353,173.16 : x
  2. Step 2: Convert to fraction form
    401,187.53/602,530.79 = 353,173.16/x
  3. Step 3: Cross multiply
    401,187.53x = 602,530.79 × 353,173.16
  4. Step 4: Simplify right side
    401,187.53x = 212,797,702,842.06
  5. Step 5: Solve for x
    x = 212,797,702,842.06/401,187.53
  6. Step 6: Final answer
    x = 530,419.53

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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.