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Finding the Fourth Proportional to 242,900.85, 364,362.21 and 74,408.90

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Solution

The fourth proportional to 242,900.85, 364,362.21 and 74,408.90 is: 111,616.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    242,900.85 : 364,362.21 = 74,408.90 : x
  2. Step 2: Convert to fraction form
    242,900.85/364,362.21 = 74,408.90/x
  3. Step 3: Cross multiply
    242,900.85x = 364,362.21 × 74,408.90
  4. Step 4: Simplify right side
    242,900.85x = 27,111,791,247.67
  5. Step 5: Solve for x
    x = 27,111,791,247.67/242,900.85
  6. Step 6: Final answer
    x = 111,616.70

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.