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Finding the Fourth Proportional to 14,060.31, 21,073.95 and 7,818.81

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Solution

The fourth proportional to 14,060.31, 21,073.95 and 7,818.81 is: 11,719.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,060.31 : 21,073.95 = 7,818.81 : x
  2. Step 2: Convert to fraction form
    14,060.31/21,073.95 = 7,818.81/x
  3. Step 3: Cross multiply
    14,060.31x = 21,073.95 × 7,818.81
  4. Step 4: Simplify right side
    14,060.31x = 164,773,211.00
  5. Step 5: Solve for x
    x = 164,773,211.00/14,060.31
  6. Step 6: Final answer
    x = 11,719.03

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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.