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Finding the Fourth Proportional to 45,806.64, 68,719.76 and 14,216.01

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Solution

The fourth proportional to 45,806.64, 68,719.76 and 14,216.01 is: 21,327.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,806.64 : 68,719.76 = 14,216.01 : x
  2. Step 2: Convert to fraction form
    45,806.64/68,719.76 = 14,216.01/x
  3. Step 3: Cross multiply
    45,806.64x = 68,719.76 × 14,216.01
  4. Step 4: Simplify right side
    45,806.64x = 976,920,795.36
  5. Step 5: Solve for x
    x = 976,920,795.36/45,806.64
  6. Step 6: Final answer
    x = 21,327.06

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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.