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Finding the Fourth Proportional to 411,951.90, 617,927.85 and 201,999.90

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Solution

The fourth proportional to 411,951.90, 617,927.85 and 201,999.90 is: 302,999.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    411,951.90 : 617,927.85 = 201,999.90 : x
  2. Step 2: Convert to fraction form
    411,951.90/617,927.85 = 201,999.90/x
  3. Step 3: Cross multiply
    411,951.90x = 617,927.85 × 201,999.90
  4. Step 4: Simplify right side
    411,951.90x = 124,821,363,907.22
  5. Step 5: Solve for x
    x = 124,821,363,907.22/411,951.90
  6. Step 6: Final answer
    x = 302,999.85

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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.