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Finding the Fourth Proportional to 282,188.88, 389,427.84 and 154,863.36

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Solution

The fourth proportional to 282,188.88, 389,427.84 and 154,863.36 is: 213,715.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,188.88 : 389,427.84 = 154,863.36 : x
  2. Step 2: Convert to fraction form
    282,188.88/389,427.84 = 154,863.36/x
  3. Step 3: Cross multiply
    282,188.88x = 389,427.84 × 154,863.36
  4. Step 4: Simplify right side
    282,188.88x = 60,308,103,779.94
  5. Step 5: Solve for x
    x = 60,308,103,779.94/282,188.88
  6. Step 6: Final answer
    x = 213,715.38

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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.