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Finding the Fourth Proportional to 89,705.40, 134,533.80 and 26,525.40

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Solution

The fourth proportional to 89,705.40, 134,533.80 and 26,525.40 is: 39,780.91

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,705.40 : 134,533.80 = 26,525.40 : x
  2. Step 2: Convert to fraction form
    89,705.40/134,533.80 = 26,525.40/x
  3. Step 3: Cross multiply
    89,705.40x = 134,533.80 × 26,525.40
  4. Step 4: Simplify right side
    89,705.40x = 3,568,562,858.52
  5. Step 5: Solve for x
    x = 3,568,562,858.52/89,705.40
  6. Step 6: Final answer
    x = 39,780.91

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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.