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Finding the Fourth Proportional to 120,025.53, 179,988.48 and 45,107.01

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Solution

The fourth proportional to 120,025.53, 179,988.48 and 45,107.01 is: 67,641.79

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,025.53 : 179,988.48 = 45,107.01 : x
  2. Step 2: Convert to fraction form
    120,025.53/179,988.48 = 45,107.01/x
  3. Step 3: Cross multiply
    120,025.53x = 179,988.48 × 45,107.01
  4. Step 4: Simplify right side
    120,025.53x = 8,118,742,167.24
  5. Step 5: Solve for x
    x = 8,118,742,167.24/120,025.53
  6. Step 6: Final answer
    x = 67,641.79

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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.