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Finding the Fourth Proportional to 436,853.89, 655,281.11 and 121,310.83

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Solution

The fourth proportional to 436,853.89, 655,281.11 and 121,310.83 is: 181,966.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,853.89 : 655,281.11 = 121,310.83 : x
  2. Step 2: Convert to fraction form
    436,853.89/655,281.11 = 121,310.83/x
  3. Step 3: Cross multiply
    436,853.89x = 655,281.11 × 121,310.83
  4. Step 4: Simplify right side
    436,853.89x = 79,492,695,337.42
  5. Step 5: Solve for x
    x = 79,492,695,337.42/436,853.89
  6. Step 6: Final answer
    x = 181,966.32

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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.