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Finding the Fourth Proportional to 289,082.40, 433,558.80 and 189,938.40

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Solution

The fourth proportional to 289,082.40, 433,558.80 and 189,938.40 is: 284,865.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,082.40 : 433,558.80 = 189,938.40 : x
  2. Step 2: Convert to fraction form
    289,082.40/433,558.80 = 189,938.40/x
  3. Step 3: Cross multiply
    289,082.40x = 433,558.80 × 189,938.40
  4. Step 4: Simplify right side
    289,082.40x = 82,349,464,777.92
  5. Step 5: Solve for x
    x = 82,349,464,777.92/289,082.40
  6. Step 6: Final answer
    x = 284,865.02

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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.