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Finding the Fourth Proportional to 621,999.80, 933,114.90 and 201,289.40

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Solution

The fourth proportional to 621,999.80, 933,114.90 and 201,289.40 is: 301,971.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    621,999.80 : 933,114.90 = 201,289.40 : x
  2. Step 2: Convert to fraction form
    621,999.80/933,114.90 = 201,289.40/x
  3. Step 3: Cross multiply
    621,999.80x = 933,114.90 × 201,289.40
  4. Step 4: Simplify right side
    621,999.80x = 187,826,138,352.06
  5. Step 5: Solve for x
    x = 187,826,138,352.06/621,999.80
  6. Step 6: Final answer
    x = 301,971.38

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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.