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Finding the Fourth Proportional to 666,581.54, 919,881.93 and 376,254.21

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Solution

The fourth proportional to 666,581.54, 919,881.93 and 376,254.21 is: 519,230.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,581.54 : 919,881.93 = 376,254.21 : x
  2. Step 2: Convert to fraction form
    666,581.54/919,881.93 = 376,254.21/x
  3. Step 3: Cross multiply
    666,581.54x = 919,881.93 × 376,254.21
  4. Step 4: Simplify right side
    666,581.54x = 346,109,452,138.61
  5. Step 5: Solve for x
    x = 346,109,452,138.61/666,581.54
  6. Step 6: Final answer
    x = 519,230.48

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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.