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Finding the Fourth Proportional to 415,449.51, 623,279.41 and 115,930.04

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Solution

The fourth proportional to 415,449.51, 623,279.41 and 115,930.04 is: 173,924.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,449.51 : 623,279.41 = 115,930.04 : x
  2. Step 2: Convert to fraction form
    415,449.51/623,279.41 = 115,930.04/x
  3. Step 3: Cross multiply
    415,449.51x = 623,279.41 × 115,930.04
  4. Step 4: Simplify right side
    415,449.51x = 72,256,803,526.25
  5. Step 5: Solve for x
    x = 72,256,803,526.25/415,449.51
  6. Step 6: Final answer
    x = 173,924.39

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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.