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Finding the Fourth Proportional to 4,703.56, 6,486.72 and 3,905.64

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Solution

The fourth proportional to 4,703.56, 6,486.72 and 3,905.64 is: 5,386.30

Step by Step Solution

  1. Step 1: Write the proportion equation
    4,703.56 : 6,486.72 = 3,905.64 : x
  2. Step 2: Convert to fraction form
    4,703.56/6,486.72 = 3,905.64/x
  3. Step 3: Cross multiply
    4,703.56x = 6,486.72 × 3,905.64
  4. Step 4: Simplify right side
    4,703.56x = 25,334,793.10
  5. Step 5: Solve for x
    x = 25,334,793.10/4,703.56
  6. Step 6: Final answer
    x = 5,386.30

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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.