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Finding the Fourth Proportional to 57,714.90, 86,572.35 and 45,905.10

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Solution

The fourth proportional to 57,714.90, 86,572.35 and 45,905.10 is: 68,857.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    57,714.90 : 86,572.35 = 45,905.10 : x
  2. Step 2: Convert to fraction form
    57,714.90/86,572.35 = 45,905.10/x
  3. Step 3: Cross multiply
    57,714.90x = 86,572.35 × 45,905.10
  4. Step 4: Simplify right side
    57,714.90x = 3,974,112,383.99
  5. Step 5: Solve for x
    x = 3,974,112,383.99/57,714.90
  6. Step 6: Final answer
    x = 68,857.65

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Similar ratio
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1.5x scale

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.