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Finding the Fourth Proportional to 86,999.56, 130,515.74 and 27,819.34

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Solution

The fourth proportional to 86,999.56, 130,515.74 and 27,819.34 is: 41,734.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,999.56 : 130,515.74 = 27,819.34 : x
  2. Step 2: Convert to fraction form
    86,999.56/130,515.74 = 27,819.34/x
  3. Step 3: Cross multiply
    86,999.56x = 130,515.74 × 27,819.34
  4. Step 4: Simplify right side
    86,999.56x = 3,630,861,746.41
  5. Step 5: Solve for x
    x = 3,630,861,746.41/86,999.56
  6. Step 6: Final answer
    x = 41,734.25

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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.