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Finding the Fourth Proportional to 504,802.72, 696,640.89 and 275,363.87

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Solution

The fourth proportional to 504,802.72, 696,640.89 and 275,363.87 is: 380,009.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    504,802.72 : 696,640.89 = 275,363.87 : x
  2. Step 2: Convert to fraction form
    504,802.72/696,640.89 = 275,363.87/x
  3. Step 3: Cross multiply
    504,802.72x = 696,640.89 × 275,363.87
  4. Step 4: Simplify right side
    504,802.72x = 191,829,731,470.64
  5. Step 5: Solve for x
    x = 191,829,731,470.64/504,802.72
  6. Step 6: Final answer
    x = 380,009.31

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.