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Finding the Fourth Proportional to 520,000.80, 779,272.20 and 413,566.80

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Solution

The fourth proportional to 520,000.80, 779,272.20 and 413,566.80 is: 619,770.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    520,000.80 : 779,272.20 = 413,566.80 : x
  2. Step 2: Convert to fraction form
    520,000.80/779,272.20 = 413,566.80/x
  3. Step 3: Cross multiply
    520,000.80x = 779,272.20 × 413,566.80
  4. Step 4: Simplify right side
    520,000.80x = 322,281,110,082.96
  5. Step 5: Solve for x
    x = 322,281,110,082.96/520,000.80
  6. Step 6: Final answer
    x = 619,770.41

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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.