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Finding the Fourth Proportional to 282,062.75, 389,239.57 and 157,881.98

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Solution

The fourth proportional to 282,062.75, 389,239.57 and 157,881.98 is: 217,873.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,062.75 : 389,239.57 = 157,881.98 : x
  2. Step 2: Convert to fraction form
    282,062.75/389,239.57 = 157,881.98/x
  3. Step 3: Cross multiply
    282,062.75x = 389,239.57 × 157,881.98
  4. Step 4: Simplify right side
    282,062.75x = 61,453,914,005.95
  5. Step 5: Solve for x
    x = 61,453,914,005.95/282,062.75
  6. Step 6: Final answer
    x = 217,873.20

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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.