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Finding the Fourth Proportional to 65,079.40, 97,619.10 and 53,998.60

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Solution

The fourth proportional to 65,079.40, 97,619.10 and 53,998.60 is: 80,997.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,079.40 : 97,619.10 = 53,998.60 : x
  2. Step 2: Convert to fraction form
    65,079.40/97,619.10 = 53,998.60/x
  3. Step 3: Cross multiply
    65,079.40x = 97,619.10 × 53,998.60
  4. Step 4: Simplify right side
    65,079.40x = 5,271,294,733.26
  5. Step 5: Solve for x
    x = 5,271,294,733.26/65,079.40
  6. Step 6: Final answer
    x = 80,997.90

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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.