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Finding the Fourth Proportional to 14,607.76, 21,893.40 and 6,278

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Solution

The fourth proportional to 14,607.76, 21,893.40 and 6,278 is: 9,409.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,607.76 : 21,893.40 = 6,278 : x
  2. Step 2: Convert to fraction form
    14,607.76/21,893.40 = 6,278/x
  3. Step 3: Cross multiply
    14,607.76x = 21,893.40 × 6,278
  4. Step 4: Simplify right side
    14,607.76x = 137,446,765.20
  5. Step 5: Solve for x
    x = 137,446,765.20/14,607.76
  6. Step 6: Final answer
    x = 9,409.16

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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.