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Finding the Fourth Proportional to 72,934.20, 100,647.72 and 41,102.40

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Solution

The fourth proportional to 72,934.20, 100,647.72 and 41,102.40 is: 56,720.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    72,934.20 : 100,647.72 = 41,102.40 : x
  2. Step 2: Convert to fraction form
    72,934.20/100,647.72 = 41,102.40/x
  3. Step 3: Cross multiply
    72,934.20x = 100,647.72 × 41,102.40
  4. Step 4: Simplify right side
    72,934.20x = 4,136,862,846.53
  5. Step 5: Solve for x
    x = 4,136,862,846.53/72,934.20
  6. Step 6: Final answer
    x = 56,720.48

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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.