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Finding the Fourth Proportional to 606,421.60, 909,675.60 and 185,696.80

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Solution

The fourth proportional to 606,421.60, 909,675.60 and 185,696.80 is: 278,558.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    606,421.60 : 909,675.60 = 185,696.80 : x
  2. Step 2: Convert to fraction form
    606,421.60/909,675.60 = 185,696.80/x
  3. Step 3: Cross multiply
    606,421.60x = 909,675.60 × 185,696.80
  4. Step 4: Simplify right side
    606,421.60x = 168,923,847,958.08
  5. Step 5: Solve for x
    x = 168,923,847,958.08/606,421.60
  6. Step 6: Final answer
    x = 278,558.43

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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.