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Finding the Fourth Proportional to 620,636.18, 931,027.18 and 221,333.72

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Solution

The fourth proportional to 620,636.18, 931,027.18 and 221,333.72 is: 332,026.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    620,636.18 : 931,027.18 = 221,333.72 : x
  2. Step 2: Convert to fraction form
    620,636.18/931,027.18 = 221,333.72/x
  3. Step 3: Cross multiply
    620,636.18x = 931,027.18 × 221,333.72
  4. Step 4: Simplify right side
    620,636.18x = 206,067,709,170.51
  5. Step 5: Solve for x
    x = 206,067,709,170.51/620,636.18
  6. Step 6: Final answer
    x = 332,026.58

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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.