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Finding the Fourth Proportional to 282,387.06, 389,696.27 and 161,520.89

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Solution

The fourth proportional to 282,387.06, 389,696.27 and 161,520.89 is: 222,900.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,387.06 : 389,696.27 = 161,520.89 : x
  2. Step 2: Convert to fraction form
    282,387.06/389,696.27 = 161,520.89/x
  3. Step 3: Cross multiply
    282,387.06x = 389,696.27 × 161,520.89
  4. Step 4: Simplify right side
    282,387.06x = 62,944,085,603.99
  5. Step 5: Solve for x
    x = 62,944,085,603.99/282,387.06
  6. Step 6: Final answer
    x = 222,900.04

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1.5x scale

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.