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Finding the Fourth Proportional to 65,911.66, 98,884.35 and 19,164.54

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Solution

The fourth proportional to 65,911.66, 98,884.35 and 19,164.54 is: 28,751.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,911.66 : 98,884.35 = 19,164.54 : x
  2. Step 2: Convert to fraction form
    65,911.66/98,884.35 = 19,164.54/x
  3. Step 3: Cross multiply
    65,911.66x = 98,884.35 × 19,164.54
  4. Step 4: Simplify right side
    65,911.66x = 1,895,072,490.70
  5. Step 5: Solve for x
    x = 1,895,072,490.70/65,911.66
  6. Step 6: Final answer
    x = 28,751.70

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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.