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Finding the Fourth Proportional to 65,697.60, 98,400.60 and 56,949.60

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Solution

The fourth proportional to 65,697.60, 98,400.60 and 56,949.60 is: 85,298.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,697.60 : 98,400.60 = 56,949.60 : x
  2. Step 2: Convert to fraction form
    65,697.60/98,400.60 = 56,949.60/x
  3. Step 3: Cross multiply
    65,697.60x = 98,400.60 × 56,949.60
  4. Step 4: Simplify right side
    65,697.60x = 5,603,874,809.76
  5. Step 5: Solve for x
    x = 5,603,874,809.76/65,697.60
  6. Step 6: Final answer
    x = 85,298.01

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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.