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Finding the Fourth Proportional to 48,336.84, 72,484.74 and 18,749.16

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Solution

The fourth proportional to 48,336.84, 72,484.74 and 18,749.16 is: 28,115.78

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,336.84 : 72,484.74 = 18,749.16 : x
  2. Step 2: Convert to fraction form
    48,336.84/72,484.74 = 18,749.16/x
  3. Step 3: Cross multiply
    48,336.84x = 72,484.74 × 18,749.16
  4. Step 4: Simplify right side
    48,336.84x = 1,359,027,987.82
  5. Step 5: Solve for x
    x = 1,359,027,987.82/48,336.84
  6. Step 6: Final answer
    x = 28,115.78

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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.