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Finding the Fourth Proportional to 355,513.92, 533,485.92 and 155,845.68

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Solution

The fourth proportional to 355,513.92, 533,485.92 and 155,845.68 is: 233,862.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,513.92 : 533,485.92 = 155,845.68 : x
  2. Step 2: Convert to fraction form
    355,513.92/533,485.92 = 155,845.68/x
  3. Step 3: Cross multiply
    355,513.92x = 533,485.92 × 155,845.68
  4. Step 4: Simplify right side
    355,513.92x = 83,141,475,972.83
  5. Step 5: Solve for x
    x = 83,141,475,972.83/355,513.92
  6. Step 6: Final answer
    x = 233,862.79

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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.