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Finding the Fourth Proportional to 470,447.11, 649,220.11 and 255,587.11

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Solution

The fourth proportional to 470,447.11, 649,220.11 and 255,587.11 is: 352,711.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    470,447.11 : 649,220.11 = 255,587.11 : x
  2. Step 2: Convert to fraction form
    470,447.11/649,220.11 = 255,587.11/x
  3. Step 3: Cross multiply
    470,447.11x = 649,220.11 × 255,587.11
  4. Step 4: Simplify right side
    470,447.11x = 165,932,294,496.31
  5. Step 5: Solve for x
    x = 165,932,294,496.31/470,447.11
  6. Step 6: Final answer
    x = 352,711.90

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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.