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Finding the Fourth Proportional to 552,112.70, 761,908.22 and 307,095.80

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Solution

The fourth proportional to 552,112.70, 761,908.22 and 307,095.80 is: 423,788.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,112.70 : 761,908.22 = 307,095.80 : x
  2. Step 2: Convert to fraction form
    552,112.70/761,908.22 = 307,095.80/x
  3. Step 3: Cross multiply
    552,112.70x = 761,908.22 × 307,095.80
  4. Step 4: Simplify right side
    552,112.70x = 233,978,809,002.46
  5. Step 5: Solve for x
    x = 233,978,809,002.46/552,112.70
  6. Step 6: Final answer
    x = 423,788.13

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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.