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Finding the Fourth Proportional to 69,335.64, 104,025.72 and 48,078

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Solution

The fourth proportional to 69,335.64, 104,025.72 and 48,078 is: 72,132.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,335.64 : 104,025.72 = 48,078 : x
  2. Step 2: Convert to fraction form
    69,335.64/104,025.72 = 48,078/x
  3. Step 3: Cross multiply
    69,335.64x = 104,025.72 × 48,078
  4. Step 4: Simplify right side
    69,335.64x = 5,001,348,566.16
  5. Step 5: Solve for x
    x = 5,001,348,566.16/69,335.64
  6. Step 6: Final answer
    x = 72,132.44

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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.