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Finding the Fourth Proportional to 93,697.20, 140,448.60 and 51,512.40

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Solution

The fourth proportional to 93,697.20, 140,448.60 and 51,512.40 is: 77,215.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    93,697.20 : 140,448.60 = 51,512.40 : x
  2. Step 2: Convert to fraction form
    93,697.20/140,448.60 = 51,512.40/x
  3. Step 3: Cross multiply
    93,697.20x = 140,448.60 × 51,512.40
  4. Step 4: Simplify right side
    93,697.20x = 7,234,844,462.64
  5. Step 5: Solve for x
    x = 7,234,844,462.64/93,697.20
  6. Step 6: Final answer
    x = 77,215.16

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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.