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Finding the Fourth Proportional to 190,449, 262,819.62 and 105,579

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Solution

The fourth proportional to 190,449, 262,819.62 and 105,579 is: 145,699.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    190,449 : 262,819.62 = 105,579 : x
  2. Step 2: Convert to fraction form
    190,449/262,819.62 = 105,579/x
  3. Step 3: Cross multiply
    190,449x = 262,819.62 × 105,579
  4. Step 4: Simplify right side
    190,449x = 27,748,232,659.98
  5. Step 5: Solve for x
    x = 27,748,232,659.98/190,449
  6. Step 6: Final answer
    x = 145,699.02

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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.