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Finding the Fourth Proportional to 64,626.88, 96,870.60 and 31,276.48

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Solution

The fourth proportional to 64,626.88, 96,870.60 and 31,276.48 is: 46,880.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,626.88 : 96,870.60 = 31,276.48 : x
  2. Step 2: Convert to fraction form
    64,626.88/96,870.60 = 31,276.48/x
  3. Step 3: Cross multiply
    64,626.88x = 96,870.60 × 31,276.48
  4. Step 4: Simplify right side
    64,626.88x = 3,029,771,383.49
  5. Step 5: Solve for x
    x = 3,029,771,383.49/64,626.88
  6. Step 6: Final answer
    x = 46,880.98

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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.