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Finding the Fourth Proportional to 171,043.20, 255,873.60 and 147,926.40

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Solution

The fourth proportional to 171,043.20, 255,873.60 and 147,926.40 is: 221,291.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,043.20 : 255,873.60 = 147,926.40 : x
  2. Step 2: Convert to fraction form
    171,043.20/255,873.60 = 147,926.40/x
  3. Step 3: Cross multiply
    171,043.20x = 255,873.60 × 147,926.40
  4. Step 4: Simplify right side
    171,043.20x = 37,850,460,503.04
  5. Step 5: Solve for x
    x = 37,850,460,503.04/171,043.20
  6. Step 6: Final answer
    x = 221,291.82

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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.