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Finding the Fourth Proportional to 373,810.92, 515,852.47 and 212,662.51

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Solution

The fourth proportional to 373,810.92, 515,852.47 and 212,662.51 is: 293,470.51

Step by Step Solution

  1. Step 1: Write the proportion equation
    373,810.92 : 515,852.47 = 212,662.51 : x
  2. Step 2: Convert to fraction form
    373,810.92/515,852.47 = 212,662.51/x
  3. Step 3: Cross multiply
    373,810.92x = 515,852.47 × 212,662.51
  4. Step 4: Simplify right side
    373,810.92x = 109,702,483,535.88
  5. Step 5: Solve for x
    x = 109,702,483,535.88/373,810.92
  6. Step 6: Final answer
    x = 293,470.51

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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.