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Finding the Fourth Proportional to 436,694.94, 655,042.72 and 121,152.14

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Solution

The fourth proportional to 436,694.94, 655,042.72 and 121,152.14 is: 181,728.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,694.94 : 655,042.72 = 121,152.14 : x
  2. Step 2: Convert to fraction form
    436,694.94/655,042.72 = 121,152.14/x
  3. Step 3: Cross multiply
    436,694.94x = 655,042.72 × 121,152.14
  4. Step 4: Simplify right side
    436,694.94x = 79,359,827,319.42
  5. Step 5: Solve for x
    x = 79,359,827,319.42/436,694.94
  6. Step 6: Final answer
    x = 181,728.30

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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.