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Finding the Fourth Proportional to 193,062.72, 289,523.04 and 66,670.80

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Solution

The fourth proportional to 193,062.72, 289,523.04 and 66,670.80 is: 99,981.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    193,062.72 : 289,523.04 = 66,670.80 : x
  2. Step 2: Convert to fraction form
    193,062.72/289,523.04 = 66,670.80/x
  3. Step 3: Cross multiply
    193,062.72x = 289,523.04 × 66,670.80
  4. Step 4: Simplify right side
    193,062.72x = 19,302,732,695.23
  5. Step 5: Solve for x
    x = 19,302,732,695.23/193,062.72
  6. Step 6: Final answer
    x = 99,981.67

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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.