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Finding the Fourth Proportional to 363,929.10, 545,893.65 and 127,247.10

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Solution

The fourth proportional to 363,929.10, 545,893.65 and 127,247.10 is: 190,870.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    363,929.10 : 545,893.65 = 127,247.10 : x
  2. Step 2: Convert to fraction form
    363,929.10/545,893.65 = 127,247.10/x
  3. Step 3: Cross multiply
    363,929.10x = 545,893.65 × 127,247.10
  4. Step 4: Simplify right side
    363,929.10x = 69,463,383,870.92
  5. Step 5: Solve for x
    x = 69,463,383,870.92/363,929.10
  6. Step 6: Final answer
    x = 190,870.65

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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.