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Finding the Fourth Proportional to 355,422.30, 533,125.72 and 115,543.94

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Solution

The fourth proportional to 355,422.30, 533,125.72 and 115,543.94 is: 173,313.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    355,422.30 : 533,125.72 = 115,543.94 : x
  2. Step 2: Convert to fraction form
    355,422.30/533,125.72 = 115,543.94/x
  3. Step 3: Cross multiply
    355,422.30x = 533,125.72 × 115,543.94
  4. Step 4: Simplify right side
    355,422.30x = 61,599,446,204.14
  5. Step 5: Solve for x
    x = 61,599,446,204.14/355,422.30
  6. Step 6: Final answer
    x = 173,313.40

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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.