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Finding the Fourth Proportional to 191,052, 286,621.74 and 66,393

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Solution

The fourth proportional to 191,052, 286,621.74 and 66,393 is: 99,604.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    191,052 : 286,621.74 = 66,393 : x
  2. Step 2: Convert to fraction form
    191,052/286,621.74 = 66,393/x
  3. Step 3: Cross multiply
    191,052x = 286,621.74 × 66,393
  4. Step 4: Simplify right side
    191,052x = 19,029,677,183.82
  5. Step 5: Solve for x
    x = 19,029,677,183.82/191,052
  6. Step 6: Final answer
    x = 99,604.70

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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.