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Finding the Fourth Proportional to 621,301.36, 857,391.48 and 353,029.36

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Solution

The fourth proportional to 621,301.36, 857,391.48 and 353,029.36 is: 487,178.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,301.36 : 857,391.48 = 353,029.36 : x
  2. Step 2: Convert to fraction form
    621,301.36/857,391.48 = 353,029.36/x
  3. Step 3: Cross multiply
    621,301.36x = 857,391.48 × 353,029.36
  4. Step 4: Simplify right side
    621,301.36x = 302,684,365,453.85
  5. Step 5: Solve for x
    x = 302,684,365,453.85/621,301.36
  6. Step 6: Final answer
    x = 487,178.02

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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.