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Finding the Fourth Proportional to 85,992.23, 128,992.83 and 26,019.19

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Solution

The fourth proportional to 85,992.23, 128,992.83 and 26,019.19 is: 39,030.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    85,992.23 : 128,992.83 = 26,019.19 : x
  2. Step 2: Convert to fraction form
    85,992.23/128,992.83 = 26,019.19/x
  3. Step 3: Cross multiply
    85,992.23x = 128,992.83 × 26,019.19
  4. Step 4: Simplify right side
    85,992.23x = 3,356,288,307.44
  5. Step 5: Solve for x
    x = 3,356,288,307.44/85,992.23
  6. Step 6: Final answer
    x = 39,030.13

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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.