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Finding the Fourth Proportional to 1,214,613, 1,676,166.06 and 678,069

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Solution

The fourth proportional to 1,214,613, 1,676,166.06 and 678,069 is: 935,735.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,613 : 1,676,166.06 = 678,069 : x
  2. Step 2: Convert to fraction form
    1,214,613/1,676,166.06 = 678,069/x
  3. Step 3: Cross multiply
    1,214,613x = 1,676,166.06 × 678,069
  4. Step 4: Simplify right side
    1,214,613x = 1,136,556,244,138.14
  5. Step 5: Solve for x
    x = 1,136,556,244,138.14/1,214,613
  6. Step 6: Final answer
    x = 935,735.29

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.