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Finding the Fourth Proportional to 670,996.90, 925,891.52 and 453,678.36

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Solution

The fourth proportional to 670,996.90, 925,891.52 and 453,678.36 is: 626,019.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    670,996.90 : 925,891.52 = 453,678.36 : x
  2. Step 2: Convert to fraction form
    670,996.90/925,891.52 = 453,678.36/x
  3. Step 3: Cross multiply
    670,996.90x = 925,891.52 × 453,678.36
  4. Step 4: Simplify right side
    670,996.90x = 420,056,946,331.51
  5. Step 5: Solve for x
    x = 420,056,946,331.51/670,996.90
  6. Step 6: Final answer
    x = 626,019.21

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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.