Home / 85,680.03-128,524.82-26,511.08

Finding the Fourth Proportional to 85,680.03, 128,524.82 and 26,511.08

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Solution

The fourth proportional to 85,680.03, 128,524.82 and 26,511.08 is: 39,768.09

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,680.03 : 128,524.82 = 26,511.08 : x
  2. Step 2: Convert to fraction form
    85,680.03/128,524.82 = 26,511.08/x
  3. Step 3: Cross multiply
    85,680.03x = 128,524.82 × 26,511.08
  4. Step 4: Simplify right side
    85,680.03x = 3,407,331,009.83
  5. Step 5: Solve for x
    x = 3,407,331,009.83/85,680.03
  6. Step 6: Final answer
    x = 39,768.09

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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.