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Finding the Fourth Proportional to 77,893.84, 116,840.70 and 18,729.49

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Solution

The fourth proportional to 77,893.84, 116,840.70 and 18,729.49 is: 28,094.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    77,893.84 : 116,840.70 = 18,729.49 : x
  2. Step 2: Convert to fraction form
    77,893.84/116,840.70 = 18,729.49/x
  3. Step 3: Cross multiply
    77,893.84x = 116,840.70 × 18,729.49
  4. Step 4: Simplify right side
    77,893.84x = 2,188,366,722.24
  5. Step 5: Solve for x
    x = 2,188,366,722.24/77,893.84
  6. Step 6: Final answer
    x = 28,094.22

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1.5x scale

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.