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Finding the Fourth Proportional to 65,620.40, 98,363.40 and 32,289.20

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Solution

The fourth proportional to 65,620.40, 98,363.40 and 32,289.20 is: 48,400.73

Step by Step Solution

  1. Step 1: Write the proportion equation
    65,620.40 : 98,363.40 = 32,289.20 : x
  2. Step 2: Convert to fraction form
    65,620.40/98,363.40 = 32,289.20/x
  3. Step 3: Cross multiply
    65,620.40x = 98,363.40 × 32,289.20
  4. Step 4: Simplify right side
    65,620.40x = 3,176,075,495.28
  5. Step 5: Solve for x
    x = 3,176,075,495.28/65,620.40
  6. Step 6: Final answer
    x = 48,400.73

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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.