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Finding the Fourth Proportional to 316,556.91, 436,831.22 and 173,289.24

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Solution

The fourth proportional to 316,556.91, 436,831.22 and 173,289.24 is: 239,129.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    316,556.91 : 436,831.22 = 173,289.24 : x
  2. Step 2: Convert to fraction form
    316,556.91/436,831.22 = 173,289.24/x
  3. Step 3: Cross multiply
    316,556.91x = 436,831.22 × 173,289.24
  4. Step 4: Simplify right side
    316,556.91x = 75,698,149,255.63
  5. Step 5: Solve for x
    x = 75,698,149,255.63/316,556.91
  6. Step 6: Final answer
    x = 239,129.67

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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.