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Finding the Fourth Proportional to 621,295.36, 857,383.20 and 353,023.36

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Solution

The fourth proportional to 621,295.36, 857,383.20 and 353,023.36 is: 487,169.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,295.36 : 857,383.20 = 353,023.36 : x
  2. Step 2: Convert to fraction form
    621,295.36/857,383.20 = 353,023.36/x
  3. Step 3: Cross multiply
    621,295.36x = 857,383.20 × 353,023.36
  4. Step 4: Simplify right side
    621,295.36x = 302,676,298,071.55
  5. Step 5: Solve for x
    x = 302,676,298,071.55/621,295.36
  6. Step 6: Final answer
    x = 487,169.74

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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.