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Finding the Fourth Proportional to 131,424.90, 197,165.43 and 48,318.90

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Solution

The fourth proportional to 131,424.90, 197,165.43 and 48,318.90 is: 72,488.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    131,424.90 : 197,165.43 = 48,318.90 : x
  2. Step 2: Convert to fraction form
    131,424.90/197,165.43 = 48,318.90/x
  3. Step 3: Cross multiply
    131,424.90x = 197,165.43 × 48,318.90
  4. Step 4: Simplify right side
    131,424.90x = 9,526,816,695.63
  5. Step 5: Solve for x
    x = 9,526,816,695.63/131,424.90
  6. Step 6: Final answer
    x = 72,488.67

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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.