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Finding the Fourth Proportional to 552,108, 761,901.75 and 307,091.10

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Solution

The fourth proportional to 552,108, 761,901.75 and 307,091.10 is: 423,781.66

Step by Step Solution

  1. Step 1: Write the proportion equation
    552,108 : 761,901.75 = 307,091.10 : x
  2. Step 2: Convert to fraction form
    552,108/761,901.75 = 307,091.10/x
  3. Step 3: Cross multiply
    552,108x = 761,901.75 × 307,091.10
  4. Step 4: Simplify right side
    552,108x = 233,973,246,499.43
  5. Step 5: Solve for x
    x = 233,973,246,499.43/552,108
  6. Step 6: Final answer
    x = 423,781.66

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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.