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Finding the Fourth Proportional to 573,642.40, 860,348.40 and 274,122.40

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Solution

The fourth proportional to 573,642.40, 860,348.40 and 274,122.40 is: 411,128.55

Step by Step Solution

  1. Step 1: Write the proportion equation
    573,642.40 : 860,348.40 = 274,122.40 : x
  2. Step 2: Convert to fraction form
    573,642.40/860,348.40 = 274,122.40/x
  3. Step 3: Cross multiply
    573,642.40x = 860,348.40 × 274,122.40
  4. Step 4: Simplify right side
    573,642.40x = 235,840,768,244.16
  5. Step 5: Solve for x
    x = 235,840,768,244.16/573,642.40
  6. Step 6: Final answer
    x = 411,128.55

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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.