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Finding the Fourth Proportional to 282,239.94, 389,496.15 and 154,927.38

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Solution

The fourth proportional to 282,239.94, 389,496.15 and 154,927.38 is: 213,802.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,239.94 : 389,496.15 = 154,927.38 : x
  2. Step 2: Convert to fraction form
    282,239.94/389,496.15 = 154,927.38/x
  3. Step 3: Cross multiply
    282,239.94x = 389,496.15 × 154,927.38
  4. Step 4: Simplify right side
    282,239.94x = 60,343,618,039.59
  5. Step 5: Solve for x
    x = 60,343,618,039.59/282,239.94
  6. Step 6: Final answer
    x = 213,802.55

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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.