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Finding the Fourth Proportional to 436,895.85, 655,343.78 and 259,311.45

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Solution

The fourth proportional to 436,895.85, 655,343.78 and 259,311.45 is: 388,967.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    436,895.85 : 655,343.78 = 259,311.45 : x
  2. Step 2: Convert to fraction form
    436,895.85/655,343.78 = 259,311.45/x
  3. Step 3: Cross multiply
    436,895.85x = 655,343.78 × 259,311.45
  4. Step 4: Simplify right side
    436,895.85x = 169,938,144,543.72
  5. Step 5: Solve for x
    x = 169,938,144,543.72/436,895.85
  6. Step 6: Final answer
    x = 388,967.18

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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.