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Finding the Fourth Proportional to 367,615.51, 551,421.23 and 143,132.11

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Solution

The fourth proportional to 367,615.51, 551,421.23 and 143,132.11 is: 214,697.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,615.51 : 551,421.23 = 143,132.11 : x
  2. Step 2: Convert to fraction form
    367,615.51/551,421.23 = 143,132.11/x
  3. Step 3: Cross multiply
    367,615.51x = 551,421.23 × 143,132.11
  4. Step 4: Simplify right side
    367,615.51x = 78,926,084,148.70
  5. Step 5: Solve for x
    x = 78,926,084,148.70/367,615.51
  6. Step 6: Final answer
    x = 214,697.37

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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.