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Finding the Third Proportional to 1,918,678.50 and 4,127,679

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Solution

The third proportional to 1,918,678.50 and 4,127,679 is: 8,879,931.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,918,678.50 : 4,127,679 = 4,127,679 : x
  2. Step 2: Convert to fraction form
    1,918,678.50/4,127,679 = 4,127,679/x
  3. Step 3: Cross multiply
    1,918,678.50x = 4,127,679 × 4,127,679
  4. Step 4: Simplify right side
    1,918,678.50x = 17,037,733,927,041
  5. Step 5: Solve for x
    x = 17,037,733,927,041/1,918,678.50
  6. Step 6: Final answer
    x = 8,879,931.64

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Why These Related Problems?

These problems maintain the same ratio (2.15) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.