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Finding the Fourth Proportional to 282,171.08, 389,400.84 and 154,858.52

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Solution

The fourth proportional to 282,171.08, 389,400.84 and 154,858.52 is: 213,707.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    282,171.08 : 389,400.84 = 154,858.52 : x
  2. Step 2: Convert to fraction form
    282,171.08/389,400.84 = 154,858.52/x
  3. Step 3: Cross multiply
    282,171.08x = 389,400.84 × 154,858.52
  4. Step 4: Simplify right side
    282,171.08x = 60,302,037,769.16
  5. Step 5: Solve for x
    x = 60,302,037,769.16/282,171.08
  6. Step 6: Final answer
    x = 213,707.36

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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.