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Finding the Fourth Proportional to 282,203.36, 389,440.32 and 154,879.28

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Solution

The fourth proportional to 282,203.36, 389,440.32 and 154,879.28 is: 213,733.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,203.36 : 389,440.32 = 154,879.28 : x
  2. Step 2: Convert to fraction form
    282,203.36/389,440.32 = 154,879.28/x
  3. Step 3: Cross multiply
    282,203.36x = 389,440.32 × 154,879.28
  4. Step 4: Simplify right side
    282,203.36x = 60,316,236,364.57
  5. Step 5: Solve for x
    x = 60,316,236,364.57/282,203.36
  6. Step 6: Final answer
    x = 213,733.23

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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.