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Finding the Fourth Proportional to 147,292.40, 220,951.36 and 40,676.40

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Solution

The fourth proportional to 147,292.40, 220,951.36 and 40,676.40 is: 61,018.12

Step by Step Solution

  1. Step 1: Write the proportion equation
    147,292.40 : 220,951.36 = 40,676.40 : x
  2. Step 2: Convert to fraction form
    147,292.40/220,951.36 = 40,676.40/x
  3. Step 3: Cross multiply
    147,292.40x = 220,951.36 × 40,676.40
  4. Step 4: Simplify right side
    147,292.40x = 8,987,505,899.90
  5. Step 5: Solve for x
    x = 8,987,505,899.90/147,292.40
  6. Step 6: Final answer
    x = 61,018.12

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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.