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Finding the Fourth Proportional to 86,714.75, 130,069.60 and 39,295.56

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Solution

The fourth proportional to 86,714.75, 130,069.60 and 39,295.56 is: 58,942.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    86,714.75 : 130,069.60 = 39,295.56 : x
  2. Step 2: Convert to fraction form
    86,714.75/130,069.60 = 39,295.56/x
  3. Step 3: Cross multiply
    86,714.75x = 130,069.60 × 39,295.56
  4. Step 4: Simplify right side
    86,714.75x = 5,111,158,160.50
  5. Step 5: Solve for x
    x = 5,111,158,160.50/86,714.75
  6. Step 6: Final answer
    x = 58,942.20

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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.