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Finding the Fourth Proportional to 442,445.72, 663,671.22 and 110,021.72

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Solution

The fourth proportional to 442,445.72, 663,671.22 and 110,021.72 is: 165,033.24

Step by Step Solution

  1. Step 1: Write the proportion equation
    442,445.72 : 663,671.22 = 110,021.72 : x
  2. Step 2: Convert to fraction form
    442,445.72/663,671.22 = 110,021.72/x
  3. Step 3: Cross multiply
    442,445.72x = 663,671.22 × 110,021.72
  4. Step 4: Simplify right side
    442,445.72x = 73,018,249,138.90
  5. Step 5: Solve for x
    x = 73,018,249,138.90/442,445.72
  6. Step 6: Final answer
    x = 165,033.24

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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.