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Finding the Fourth Proportional to 104,793, 157,218.30 and 30,921

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Solution

The fourth proportional to 104,793, 157,218.30 and 30,921 is: 46,390.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,793 : 157,218.30 = 30,921 : x
  2. Step 2: Convert to fraction form
    104,793/157,218.30 = 30,921/x
  3. Step 3: Cross multiply
    104,793x = 157,218.30 × 30,921
  4. Step 4: Simplify right side
    104,793x = 4,861,347,054.30
  5. Step 5: Solve for x
    x = 4,861,347,054.30/104,793
  6. Step 6: Final answer
    x = 46,390.00

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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.