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Finding the Fourth Proportional to 154,801.60, 213,623.84 and 86,818.56

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Solution

The fourth proportional to 154,801.60, 213,623.84 and 86,818.56 is: 119,808.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    154,801.60 : 213,623.84 = 86,818.56 : x
  2. Step 2: Convert to fraction form
    154,801.60/213,623.84 = 86,818.56/x
  3. Step 3: Cross multiply
    154,801.60x = 213,623.84 × 86,818.56
  4. Step 4: Simplify right side
    154,801.60x = 18,546,514,170.47
  5. Step 5: Solve for x
    x = 18,546,514,170.47/154,801.60
  6. Step 6: Final answer
    x = 119,808.28

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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.