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Finding the Fourth Proportional to 638,745.30, 957,680.55 and 301,947.30

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Solution

The fourth proportional to 638,745.30, 957,680.55 and 301,947.30 is: 452,714.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    638,745.30 : 957,680.55 = 301,947.30 : x
  2. Step 2: Convert to fraction form
    638,745.30/957,680.55 = 301,947.30/x
  3. Step 3: Cross multiply
    638,745.30x = 957,680.55 × 301,947.30
  4. Step 4: Simplify right side
    638,745.30x = 289,169,056,335.02
  5. Step 5: Solve for x
    x = 289,169,056,335.02/638,745.30
  6. Step 6: Final answer
    x = 452,714.18

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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.