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Finding the Fourth Proportional to 8,623.31, 11,900.18 and 4,897.31

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Solution

The fourth proportional to 8,623.31, 11,900.18 and 4,897.31 is: 6,758.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    8,623.31 : 11,900.18 = 4,897.31 : x
  2. Step 2: Convert to fraction form
    8,623.31/11,900.18 = 4,897.31/x
  3. Step 3: Cross multiply
    8,623.31x = 11,900.18 × 4,897.31
  4. Step 4: Simplify right side
    8,623.31x = 58,278,912.51
  5. Step 5: Solve for x
    x = 58,278,912.51/8,623.31
  6. Step 6: Final answer
    x = 6,758.30

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.