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Finding the Fourth Proportional to 89,208.40, 133,780.20 and 44,820.40

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Solution

The fourth proportional to 89,208.40, 133,780.20 and 44,820.40 is: 67,214.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    89,208.40 : 133,780.20 = 44,820.40 : x
  2. Step 2: Convert to fraction form
    89,208.40/133,780.20 = 44,820.40/x
  3. Step 3: Cross multiply
    89,208.40x = 133,780.20 × 44,820.40
  4. Step 4: Simplify right side
    89,208.40x = 5,996,082,076.08
  5. Step 5: Solve for x
    x = 5,996,082,076.08/89,208.40
  6. Step 6: Final answer
    x = 67,214.32

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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.