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Finding the Fourth Proportional to 282,455.44, 389,787.26 and 153,392.90

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Solution

The fourth proportional to 282,455.44, 389,787.26 and 153,392.90 is: 211,681.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,455.44 : 389,787.26 = 153,392.90 : x
  2. Step 2: Convert to fraction form
    282,455.44/389,787.26 = 153,392.90/x
  3. Step 3: Cross multiply
    282,455.44x = 389,787.26 × 153,392.90
  4. Step 4: Simplify right side
    282,455.44x = 59,790,598,194.45
  5. Step 5: Solve for x
    x = 59,790,598,194.45/282,455.44
  6. Step 6: Final answer
    x = 211,681.52

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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.