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Finding the Fourth Proportional to 64,957.98, 97,439.68 and 20,583.75

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Solution

The fourth proportional to 64,957.98, 97,439.68 and 20,583.75 is: 30,876.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    64,957.98 : 97,439.68 = 20,583.75 : x
  2. Step 2: Convert to fraction form
    64,957.98/97,439.68 = 20,583.75/x
  3. Step 3: Cross multiply
    64,957.98x = 97,439.68 × 20,583.75
  4. Step 4: Simplify right side
    64,957.98x = 2,005,674,013.20
  5. Step 5: Solve for x
    x = 2,005,674,013.20/64,957.98
  6. Step 6: Final answer
    x = 30,876.48

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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.