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Finding the Fourth Proportional to 99,855.08, 137,799.68 and 59,570.54

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Solution

The fourth proportional to 99,855.08, 137,799.68 and 59,570.54 is: 82,207.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,855.08 : 137,799.68 = 59,570.54 : x
  2. Step 2: Convert to fraction form
    99,855.08/137,799.68 = 59,570.54/x
  3. Step 3: Cross multiply
    99,855.08x = 137,799.68 × 59,570.54
  4. Step 4: Simplify right side
    99,855.08x = 8,208,801,214.41
  5. Step 5: Solve for x
    x = 8,208,801,214.41/99,855.08
  6. Step 6: Final answer
    x = 82,207.15

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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.