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Finding the Fourth Proportional to 49,311.64, 73,978.40 and 14,248.63

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Solution

The fourth proportional to 49,311.64, 73,978.40 and 14,248.63 is: 21,376.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    49,311.64 : 73,978.40 = 14,248.63 : x
  2. Step 2: Convert to fraction form
    49,311.64/73,978.40 = 14,248.63/x
  3. Step 3: Cross multiply
    49,311.64x = 73,978.40 × 14,248.63
  4. Step 4: Simplify right side
    49,311.64x = 1,054,090,849.59
  5. Step 5: Solve for x
    x = 1,054,090,849.59/49,311.64
  6. Step 6: Final answer
    x = 21,376.11

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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.