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Finding the Fourth Proportional to 291,053.88, 436,748.50 and 122,561.08

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Solution

The fourth proportional to 291,053.88, 436,748.50 and 122,561.08 is: 183,912.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    291,053.88 : 436,748.50 = 122,561.08 : x
  2. Step 2: Convert to fraction form
    291,053.88/436,748.50 = 122,561.08/x
  3. Step 3: Cross multiply
    291,053.88x = 436,748.50 × 122,561.08
  4. Step 4: Simplify right side
    291,053.88x = 53,528,367,848.38
  5. Step 5: Solve for x
    x = 53,528,367,848.38/291,053.88
  6. Step 6: Final answer
    x = 183,912.23

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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.