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Finding the Fourth Proportional to 401,546.88, 601,928.64 and 191,128.32

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Solution

The fourth proportional to 401,546.88, 601,928.64 and 191,128.32 is: 286,506.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    401,546.88 : 601,928.64 = 191,128.32 : x
  2. Step 2: Convert to fraction form
    401,546.88/601,928.64 = 191,128.32/x
  3. Step 3: Cross multiply
    401,546.88x = 601,928.64 × 191,128.32
  4. Step 4: Simplify right side
    401,546.88x = 115,045,609,723.09
  5. Step 5: Solve for x
    x = 115,045,609,723.09/401,546.88
  6. Step 6: Final answer
    x = 286,506.05

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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.