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Finding the Fourth Proportional to 99,696.11, 137,575.78 and 59,408.98

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Solution

The fourth proportional to 99,696.11, 137,575.78 and 59,408.98 is: 81,981.49

Step by Step Solution

  1. Step 1: Write the proportion equation
    99,696.11 : 137,575.78 = 59,408.98 : x
  2. Step 2: Convert to fraction form
    99,696.11/137,575.78 = 59,408.98/x
  3. Step 3: Cross multiply
    99,696.11x = 137,575.78 × 59,408.98
  4. Step 4: Simplify right side
    99,696.11x = 8,173,235,926.10
  5. Step 5: Solve for x
    x = 8,173,235,926.10/99,696.11
  6. Step 6: Final answer
    x = 81,981.49

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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.