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Finding the Fourth Proportional to 5,409, 7,464.42 and 2,925

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Solution

The fourth proportional to 5,409, 7,464.42 and 2,925 is: 4,036.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    5,409 : 7,464.42 = 2,925 : x
  2. Step 2: Convert to fraction form
    5,409/7,464.42 = 2,925/x
  3. Step 3: Cross multiply
    5,409x = 7,464.42 × 2,925
  4. Step 4: Simplify right side
    5,409x = 21,833,428.50
  5. Step 5: Solve for x
    x = 21,833,428.50/5,409
  6. Step 6: Final answer
    x = 4,036.50

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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.