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Finding the Fourth Proportional to 404,525.85, 560,605.45 and 398,817.78

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Solution

The fourth proportional to 404,525.85, 560,605.45 and 398,817.78 is: 552,695.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    404,525.85 : 560,605.45 = 398,817.78 : x
  2. Step 2: Convert to fraction form
    404,525.85/560,605.45 = 398,817.78/x
  3. Step 3: Cross multiply
    404,525.85x = 560,605.45 × 398,817.78
  4. Step 4: Simplify right side
    404,525.85x = 223,579,421,024.90
  5. Step 5: Solve for x
    x = 223,579,421,024.90/404,525.85
  6. Step 6: Final answer
    x = 552,695.02

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.39) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.