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Finding the Fourth Proportional to 99.48, 137.25 and 69.93

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Solution

The fourth proportional to 99.48, 137.25 and 69.93 is: 96.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    99.48 : 137.25 = 69.93 : x
  2. Step 2: Convert to fraction form
    99.48/137.25 = 69.93/x
  3. Step 3: Cross multiply
    99.48x = 137.25 × 69.93
  4. Step 4: Simplify right side
    99.48x = 9,597.89
  5. Step 5: Solve for x
    x = 9,597.89/99.48
  6. Step 6: Final answer
    x = 96.48

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These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.