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Finding the Fourth Proportional to 171,809.60, 257,714.40 and 87,828.80

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Solution

The fourth proportional to 171,809.60, 257,714.40 and 87,828.80 is: 131,743.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    171,809.60 : 257,714.40 = 87,828.80 : x
  2. Step 2: Convert to fraction form
    171,809.60/257,714.40 = 87,828.80/x
  3. Step 3: Cross multiply
    171,809.60x = 257,714.40 × 87,828.80
  4. Step 4: Simplify right side
    171,809.60x = 22,634,746,494.72
  5. Step 5: Solve for x
    x = 22,634,746,494.72/171,809.60
  6. Step 6: Final answer
    x = 131,743.20

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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.