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Finding the Fourth Proportional to 545,661.91, 818,731.01 and 190,930.51

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Solution

The fourth proportional to 545,661.91, 818,731.01 and 190,930.51 is: 286,479.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,661.91 : 818,731.01 = 190,930.51 : x
  2. Step 2: Convert to fraction form
    545,661.91/818,731.01 = 190,930.51/x
  3. Step 3: Cross multiply
    545,661.91x = 818,731.01 × 190,930.51
  4. Step 4: Simplify right side
    545,661.91x = 156,320,729,292.12
  5. Step 5: Solve for x
    x = 156,320,729,292.12/545,661.91
  6. Step 6: Final answer
    x = 286,479.09

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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.