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Finding the Fourth Proportional to 620,825.33, 857,048.98 and 406,293.09

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Solution

The fourth proportional to 620,825.33, 857,048.98 and 406,293.09 is: 560,887.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,825.33 : 857,048.98 = 406,293.09 : x
  2. Step 2: Convert to fraction form
    620,825.33/857,048.98 = 406,293.09/x
  3. Step 3: Cross multiply
    620,825.33x = 857,048.98 × 406,293.09
  4. Step 4: Simplify right side
    620,825.33x = 348,213,078,365.55
  5. Step 5: Solve for x
    x = 348,213,078,365.55/620,825.33
  6. Step 6: Final answer
    x = 560,887.36

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1.5x scale

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.