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Finding the Fourth Proportional to 70,897.20, 106,214.60 and 41,329.20

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Solution

The fourth proportional to 70,897.20, 106,214.60 and 41,329.20 is: 61,917.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,897.20 : 106,214.60 = 41,329.20 : x
  2. Step 2: Convert to fraction form
    70,897.20/106,214.60 = 41,329.20/x
  3. Step 3: Cross multiply
    70,897.20x = 106,214.60 × 41,329.20
  4. Step 4: Simplify right side
    70,897.20x = 4,389,764,446.32
  5. Step 5: Solve for x
    x = 4,389,764,446.32/70,897.20
  6. Step 6: Final answer
    x = 61,917.32

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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.