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Finding the Fourth Proportional to 291,638.06, 437,518.11 and 123,158.78

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Solution

The fourth proportional to 291,638.06, 437,518.11 and 123,158.78 is: 184,763.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,638.06 : 437,518.11 = 123,158.78 : x
  2. Step 2: Convert to fraction form
    291,638.06/437,518.11 = 123,158.78/x
  3. Step 3: Cross multiply
    291,638.06x = 437,518.11 × 123,158.78
  4. Step 4: Simplify right side
    291,638.06x = 53,884,196,655.51
  5. Step 5: Solve for x
    x = 53,884,196,655.51/291,638.06
  6. Step 6: Final answer
    x = 184,763.94

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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.