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Finding the Fourth Proportional to 647,191.44, 893,128.32 and 360,729.72

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Solution

The fourth proportional to 647,191.44, 893,128.32 and 360,729.72 is: 497,809.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    647,191.44 : 893,128.32 = 360,729.72 : x
  2. Step 2: Convert to fraction form
    647,191.44/893,128.32 = 360,729.72/x
  3. Step 3: Cross multiply
    647,191.44x = 893,128.32 × 360,729.72
  4. Step 4: Simplify right side
    647,191.44x = 322,177,928,797.67
  5. Step 5: Solve for x
    x = 322,177,928,797.67/647,191.44
  6. Step 6: Final answer
    x = 497,809.32

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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.