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Finding the Fourth Proportional to 188,137.84, 282,293.16 and 81,554.32

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Solution

The fourth proportional to 188,137.84, 282,293.16 and 81,554.32 is: 122,368.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    188,137.84 : 282,293.16 = 81,554.32 : x
  2. Step 2: Convert to fraction form
    188,137.84/282,293.16 = 81,554.32/x
  3. Step 3: Cross multiply
    188,137.84x = 282,293.16 × 81,554.32
  4. Step 4: Simplify right side
    188,137.84x = 23,022,226,704.45
  5. Step 5: Solve for x
    x = 23,022,226,704.45/188,137.84
  6. Step 6: Final answer
    x = 122,368.93

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.