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Finding the Fourth Proportional to 863,186.10, 1,206,885.90 and 863,186.10

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Solution

The fourth proportional to 863,186.10, 1,206,885.90 and 863,186.10 is: 1,206,885.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    863,186.10 : 1,206,885.90 = 863,186.10 : x
  2. Step 2: Convert to fraction form
    863,186.10/1,206,885.90 = 863,186.10/x
  3. Step 3: Cross multiply
    863,186.10x = 1,206,885.90 × 863,186.10
  4. Step 4: Simplify right side
    863,186.10x = 1,041,767,133,165.99
  5. Step 5: Solve for x
    x = 1,041,767,133,165.99/863,186.10
  6. Step 6: Final answer
    x = 1,206,885.90

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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.