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Finding the Fourth Proportional to 355,295.78, 533,027.33 and 115,408.93

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Solution

The fourth proportional to 355,295.78, 533,027.33 and 115,408.93 is: 173,140.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,295.78 : 533,027.33 = 115,408.93 : x
  2. Step 2: Convert to fraction form
    355,295.78/533,027.33 = 115,408.93/x
  3. Step 3: Cross multiply
    355,295.78x = 533,027.33 × 115,408.93
  4. Step 4: Simplify right side
    355,295.78x = 61,516,111,240.16
  5. Step 5: Solve for x
    x = 61,516,111,240.16/355,295.78
  6. Step 6: Final answer
    x = 173,140.57

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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.