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Finding the Fourth Proportional to 104,613.50, 156,831.80 and 45,404.66

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Solution

The fourth proportional to 104,613.50, 156,831.80 and 45,404.66 is: 68,068.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    104,613.50 : 156,831.80 = 45,404.66 : x
  2. Step 2: Convert to fraction form
    104,613.50/156,831.80 = 45,404.66/x
  3. Step 3: Cross multiply
    104,613.50x = 156,831.80 × 45,404.66
  4. Step 4: Simplify right side
    104,613.50x = 7,120,894,556.19
  5. Step 5: Solve for x
    x = 7,120,894,556.19/104,613.50
  6. Step 6: Final answer
    x = 68,068.60

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.