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Finding the Fourth Proportional to 86,895.70, 122,003.90 and 86,895.70

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Solution

The fourth proportional to 86,895.70, 122,003.90 and 86,895.70 is: 122,003.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,895.70 : 122,003.90 = 86,895.70 : x
  2. Step 2: Convert to fraction form
    86,895.70/122,003.90 = 86,895.70/x
  3. Step 3: Cross multiply
    86,895.70x = 122,003.90 × 86,895.70
  4. Step 4: Simplify right side
    86,895.70x = 10,601,614,293.23
  5. Step 5: Solve for x
    x = 10,601,614,293.23/86,895.70
  6. Step 6: Final answer
    x = 122,003.90

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.40) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.