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Finding the Fourth Proportional to 628,005.64, 866,639.60 and 341,519.56

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Solution

The fourth proportional to 628,005.64, 866,639.60 and 341,519.56 is: 471,292.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    628,005.64 : 866,639.60 = 341,519.56 : x
  2. Step 2: Convert to fraction form
    628,005.64/866,639.60 = 341,519.56/x
  3. Step 3: Cross multiply
    628,005.64x = 866,639.60 × 341,519.56
  4. Step 4: Simplify right side
    628,005.64x = 295,974,374,870.58
  5. Step 5: Solve for x
    x = 295,974,374,870.58/628,005.64
  6. Step 6: Final answer
    x = 471,292.54

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.