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Finding the Fourth Proportional to 66,394.32, 99,591.93 and 19,647.60

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Solution

The fourth proportional to 66,394.32, 99,591.93 and 19,647.60 is: 29,471.53

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,394.32 : 99,591.93 = 19,647.60 : x
  2. Step 2: Convert to fraction form
    66,394.32/99,591.93 = 19,647.60/x
  3. Step 3: Cross multiply
    66,394.32x = 99,591.93 × 19,647.60
  4. Step 4: Simplify right side
    66,394.32x = 1,956,742,403.87
  5. Step 5: Solve for x
    x = 1,956,742,403.87/66,394.32
  6. Step 6: Final answer
    x = 29,471.53

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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.