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Finding the Fourth Proportional to 353,713.20, 529,792.20 and 307,057.20

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Solution

The fourth proportional to 353,713.20, 529,792.20 and 307,057.20 is: 459,910.77

Step by Step Solution

  1. Step 1: Write the proportion equation
    353,713.20 : 529,792.20 = 307,057.20 : x
  2. Step 2: Convert to fraction form
    353,713.20/529,792.20 = 307,057.20/x
  3. Step 3: Cross multiply
    353,713.20x = 529,792.20 × 307,057.20
  4. Step 4: Simplify right side
    353,713.20x = 162,676,509,513.84
  5. Step 5: Solve for x
    x = 162,676,509,513.84/353,713.20
  6. Step 6: Final answer
    x = 459,910.77

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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.