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Finding the Fourth Proportional to 443,028.40, 664,477.80 and 127,452.40

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Solution

The fourth proportional to 443,028.40, 664,477.80 and 127,452.40 is: 191,159.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    443,028.40 : 664,477.80 = 127,452.40 : x
  2. Step 2: Convert to fraction form
    443,028.40/664,477.80 = 127,452.40/x
  3. Step 3: Cross multiply
    443,028.40x = 664,477.80 × 127,452.40
  4. Step 4: Simplify right side
    443,028.40x = 84,689,290,356.72
  5. Step 5: Solve for x
    x = 84,689,290,356.72/443,028.40
  6. Step 6: Final answer
    x = 191,159.96

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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.