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Finding the Fourth Proportional to 291,145.16, 436,806.87 and 149,091.01

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Solution

The fourth proportional to 291,145.16, 436,806.87 and 149,091.01 is: 223,682.16

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,145.16 : 436,806.87 = 149,091.01 : x
  2. Step 2: Convert to fraction form
    291,145.16/436,806.87 = 149,091.01/x
  3. Step 3: Cross multiply
    291,145.16x = 436,806.87 × 149,091.01
  4. Step 4: Simplify right side
    291,145.16x = 65,123,977,423.24
  5. Step 5: Solve for x
    x = 65,123,977,423.24/291,145.16
  6. Step 6: Final answer
    x = 223,682.16

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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.