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Finding the Fourth Proportional to 415,020.58, 623,090.57 and 265,552.63

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Solution

The fourth proportional to 415,020.58, 623,090.57 and 265,552.63 is: 398,687.07

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,020.58 : 623,090.57 = 265,552.63 : x
  2. Step 2: Convert to fraction form
    415,020.58/623,090.57 = 265,552.63/x
  3. Step 3: Cross multiply
    415,020.58x = 623,090.57 × 265,552.63
  4. Step 4: Simplify right side
    415,020.58x = 165,463,339,591.70
  5. Step 5: Solve for x
    x = 165,463,339,591.70/415,020.58
  6. Step 6: Final answer
    x = 398,687.07

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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.