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Finding the Fourth Proportional to 45,807.64, 68,721.26 and 14,217.01

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Solution

The fourth proportional to 45,807.64, 68,721.26 and 14,217.01 is: 21,328.56

Step by Step Solution

  1. Step 1: Write the proportion equation
    45,807.64 : 68,721.26 = 14,217.01 : x
  2. Step 2: Convert to fraction form
    45,807.64/68,721.26 = 14,217.01/x
  3. Step 3: Cross multiply
    45,807.64x = 68,721.26 × 14,217.01
  4. Step 4: Simplify right side
    45,807.64x = 977,010,840.63
  5. Step 5: Solve for x
    x = 977,010,840.63/45,807.64
  6. Step 6: Final answer
    x = 21,328.56

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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.