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Finding the Fourth Proportional to 74,427.20, 111,511.20 and 64,059.20

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Solution

The fourth proportional to 74,427.20, 111,511.20 and 64,059.20 is: 95,977.25

Step by Step Solution

  1. Step 1: Write the proportion equation
    74,427.20 : 111,511.20 = 64,059.20 : x
  2. Step 2: Convert to fraction form
    74,427.20/111,511.20 = 64,059.20/x
  3. Step 3: Cross multiply
    74,427.20x = 111,511.20 × 64,059.20
  4. Step 4: Simplify right side
    74,427.20x = 7,143,318,263.04
  5. Step 5: Solve for x
    x = 7,143,318,263.04/74,427.20
  6. Step 6: Final answer
    x = 95,977.25

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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.