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Finding the Fourth Proportional to 666,782.77, 999,163.85 and 441,335.53

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Solution

The fourth proportional to 666,782.77, 999,163.85 and 441,335.53 is: 661,334.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,782.77 : 999,163.85 = 441,335.53 : x
  2. Step 2: Convert to fraction form
    666,782.77/999,163.85 = 441,335.53/x
  3. Step 3: Cross multiply
    666,782.77x = 999,163.85 × 441,335.53
  4. Step 4: Simplify right side
    666,782.77x = 440,966,502,592.00
  5. Step 5: Solve for x
    x = 440,966,502,592.00/666,782.77
  6. Step 6: Final answer
    x = 661,334.58

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.