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Finding the Fourth Proportional to 456,828.30, 685,285.65 and 124,404.30

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Solution

The fourth proportional to 456,828.30, 685,285.65 and 124,404.30 is: 186,618.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    456,828.30 : 685,285.65 = 124,404.30 : x
  2. Step 2: Convert to fraction form
    456,828.30/685,285.65 = 124,404.30/x
  3. Step 3: Cross multiply
    456,828.30x = 685,285.65 × 124,404.30
  4. Step 4: Simplify right side
    456,828.30x = 85,252,481,588.30
  5. Step 5: Solve for x
    x = 85,252,481,588.30/456,828.30
  6. Step 6: Final answer
    x = 186,618.21

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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.