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Finding the Fourth Proportional to 65,200.19, 90,021.08 and 44,009.15

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Solution

The fourth proportional to 65,200.19, 90,021.08 and 44,009.15 is: 60,762.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,200.19 : 90,021.08 = 44,009.15 : x
  2. Step 2: Convert to fraction form
    65,200.19/90,021.08 = 44,009.15/x
  3. Step 3: Cross multiply
    65,200.19x = 90,021.08 × 44,009.15
  4. Step 4: Simplify right side
    65,200.19x = 3,961,751,212.88
  5. Step 5: Solve for x
    x = 3,961,751,212.88/65,200.19
  6. Step 6: Final answer
    x = 60,762.88

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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.