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Finding the Fourth Proportional to 71,309.44, 98,406.67 and 38,603.76

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Solution

The fourth proportional to 71,309.44, 98,406.67 and 38,603.76 is: 53,273.00

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,309.44 : 98,406.67 = 38,603.76 : x
  2. Step 2: Convert to fraction form
    71,309.44/98,406.67 = 38,603.76/x
  3. Step 3: Cross multiply
    71,309.44x = 98,406.67 × 38,603.76
  4. Step 4: Simplify right side
    71,309.44x = 3,798,867,471.08
  5. Step 5: Solve for x
    x = 3,798,867,471.08/71,309.44
  6. Step 6: Final answer
    x = 53,273.00

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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.