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Finding the Fourth Proportional to 92,884.80, 139,370.40 and 48,561.60

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Solution

The fourth proportional to 92,884.80, 139,370.40 and 48,561.60 is: 72,864.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    92,884.80 : 139,370.40 = 48,561.60 : x
  2. Step 2: Convert to fraction form
    92,884.80/139,370.40 = 48,561.60/x
  3. Step 3: Cross multiply
    92,884.80x = 139,370.40 × 48,561.60
  4. Step 4: Simplify right side
    92,884.80x = 6,768,049,616.64
  5. Step 5: Solve for x
    x = 6,768,049,616.64/92,884.80
  6. Step 6: Final answer
    x = 72,864.99

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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.