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Finding the Fourth Proportional to 301,689.90, 416,334.78 and 165,726.60

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Solution

The fourth proportional to 301,689.90, 416,334.78 and 165,726.60 is: 228,704.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    301,689.90 : 416,334.78 = 165,726.60 : x
  2. Step 2: Convert to fraction form
    301,689.90/416,334.78 = 165,726.60/x
  3. Step 3: Cross multiply
    301,689.90x = 416,334.78 × 165,726.60
  4. Step 4: Simplify right side
    301,689.90x = 68,997,747,551.15
  5. Step 5: Solve for x
    x = 68,997,747,551.15/301,689.90
  6. Step 6: Final answer
    x = 228,704.20

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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.