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Finding the Fourth Proportional to 6,631.50, 9,953.79 and 4,871.56

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Solution

The fourth proportional to 6,631.50, 9,953.79 and 4,871.56 is: 7,312.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    6,631.50 : 9,953.79 = 4,871.56 : x
  2. Step 2: Convert to fraction form
    6,631.50/9,953.79 = 4,871.56/x
  3. Step 3: Cross multiply
    6,631.50x = 9,953.79 × 4,871.56
  4. Step 4: Simplify right side
    6,631.50x = 48,490,485.21
  5. Step 5: Solve for x
    x = 48,490,485.21/6,631.50
  6. Step 6: Final answer
    x = 7,312.14

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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.