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Finding the Fourth Proportional to 45,808.64, 68,722.76 and 14,218.01

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Solution

The fourth proportional to 45,808.64, 68,722.76 and 14,218.01 is: 21,330.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,808.64 : 68,722.76 = 14,218.01 : x
  2. Step 2: Convert to fraction form
    45,808.64/68,722.76 = 14,218.01/x
  3. Step 3: Cross multiply
    45,808.64x = 68,722.76 × 14,218.01
  4. Step 4: Simplify right side
    45,808.64x = 977,100,888.91
  5. Step 5: Solve for x
    x = 977,100,888.91/45,808.64
  6. Step 6: Final answer
    x = 21,330.06

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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.