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Finding the Fourth Proportional to 1,214,614, 1,676,167.44 and 678,070

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Solution

The fourth proportional to 1,214,614, 1,676,167.44 and 678,070 is: 935,736.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,214,614 : 1,676,167.44 = 678,070 : x
  2. Step 2: Convert to fraction form
    1,214,614/1,676,167.44 = 678,070/x
  3. Step 3: Cross multiply
    1,214,614x = 1,676,167.44 × 678,070
  4. Step 4: Simplify right side
    1,214,614x = 1,136,558,856,040.80
  5. Step 5: Solve for x
    x = 1,136,558,856,040.80/1,214,614
  6. Step 6: Final answer
    x = 935,736.67

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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.