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Finding the Fourth Proportional to 526,408.77, 789,613.28 and 147,385.34

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Solution

The fourth proportional to 526,408.77, 789,613.28 and 147,385.34 is: 221,078.04

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,408.77 : 789,613.28 = 147,385.34 : x
  2. Step 2: Convert to fraction form
    526,408.77/789,613.28 = 147,385.34/x
  3. Step 3: Cross multiply
    526,408.77x = 789,613.28 × 147,385.34
  4. Step 4: Simplify right side
    526,408.77x = 116,377,420,570.07
  5. Step 5: Solve for x
    x = 116,377,420,570.07/526,408.77
  6. Step 6: Final answer
    x = 221,078.04

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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.