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Finding the Fourth Proportional to 71,486.16, 98,676.44 and 48,808.88

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Solution

The fourth proportional to 71,486.16, 98,676.44 and 48,808.88 is: 67,373.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    71,486.16 : 98,676.44 = 48,808.88 : x
  2. Step 2: Convert to fraction form
    71,486.16/98,676.44 = 48,808.88/x
  3. Step 3: Cross multiply
    71,486.16x = 98,676.44 × 48,808.88
  4. Step 4: Simplify right side
    71,486.16x = 4,816,286,518.79
  5. Step 5: Solve for x
    x = 4,816,286,518.79/71,486.16
  6. Step 6: Final answer
    x = 67,373.69

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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.