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Finding the Fourth Proportional to 407,790.63, 611,938.55 and 237,092.68

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Solution

The fourth proportional to 407,790.63, 611,938.55 and 237,092.68 is: 355,785.89

Step by Step Solution

  1. Step 1: Write the proportion equation
    407,790.63 : 611,938.55 = 237,092.68 : x
  2. Step 2: Convert to fraction form
    407,790.63/611,938.55 = 237,092.68/x
  3. Step 3: Cross multiply
    407,790.63x = 611,938.55 × 237,092.68
  4. Step 4: Simplify right side
    407,790.63x = 145,086,150,838.82
  5. Step 5: Solve for x
    x = 145,086,150,838.82/407,790.63
  6. Step 6: Final answer
    x = 355,785.89

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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.