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Finding the Fourth Proportional to 367,061.55, 550,428.30 and 142,347.30

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Solution

The fourth proportional to 367,061.55, 550,428.30 and 142,347.30 is: 213,457.34

Step by Step Solution

  1. Step 1: Write the proportion equation
    367,061.55 : 550,428.30 = 142,347.30 : x
  2. Step 2: Convert to fraction form
    367,061.55/550,428.30 = 142,347.30/x
  3. Step 3: Cross multiply
    367,061.55x = 550,428.30 × 142,347.30
  4. Step 4: Simplify right side
    367,061.55x = 78,351,982,348.59
  5. Step 5: Solve for x
    x = 78,351,982,348.59/367,061.55
  6. Step 6: Final answer
    x = 213,457.34

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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.