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Finding the Fourth Proportional to 621,711.10, 933,027.45 and 411,279.10

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Solution

The fourth proportional to 621,711.10, 933,027.45 and 411,279.10 is: 617,223.48

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,711.10 : 933,027.45 = 411,279.10 : x
  2. Step 2: Convert to fraction form
    621,711.10/933,027.45 = 411,279.10/x
  3. Step 3: Cross multiply
    621,711.10x = 933,027.45 × 411,279.10
  4. Step 4: Simplify right side
    621,711.10x = 383,734,689,911.30
  5. Step 5: Solve for x
    x = 383,734,689,911.30/621,711.10
  6. Step 6: Final answer
    x = 617,223.48

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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.