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Finding the Fourth Proportional to 109.35, 150.88 and 70.00

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Solution

The fourth proportional to 109.35, 150.88 and 70.00 is: 96.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    109.35 : 150.88 = 70.00 : x
  2. Step 2: Convert to fraction form
    109.35/150.88 = 70.00/x
  3. Step 3: Cross multiply
    109.35x = 150.88 × 70.00
  4. Step 4: Simplify right side
    109.35x = 10,561.12
  5. Step 5: Solve for x
    x = 10,561.12/109.35
  6. Step 6: Final answer
    x = 96.58

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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.