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Finding the Fourth Proportional to 363,930.30, 545,895.45 and 127,296.90

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Solution

The fourth proportional to 363,930.30, 545,895.45 and 127,296.90 is: 190,945.35

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,930.30 : 545,895.45 = 127,296.90 : x
  2. Step 2: Convert to fraction form
    363,930.30/545,895.45 = 127,296.90/x
  3. Step 3: Cross multiply
    363,930.30x = 545,895.45 × 127,296.90
  4. Step 4: Simplify right side
    363,930.30x = 69,490,798,509.11
  5. Step 5: Solve for x
    x = 69,490,798,509.11/363,930.30
  6. Step 6: Final answer
    x = 190,945.35

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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.