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Finding the Fourth Proportional to 71,059.86, 98,064.63 and 39,230.76

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Solution

The fourth proportional to 71,059.86, 98,064.63 and 39,230.76 is: 54,139.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,059.86 : 98,064.63 = 39,230.76 : x
  2. Step 2: Convert to fraction form
    71,059.86/98,064.63 = 39,230.76/x
  3. Step 3: Cross multiply
    71,059.86x = 98,064.63 × 39,230.76
  4. Step 4: Simplify right side
    71,059.86x = 3,847,149,964.02
  5. Step 5: Solve for x
    x = 3,847,149,964.02/71,059.86
  6. Step 6: Final answer
    x = 54,139.57

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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.