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Finding the Fourth Proportional to 109,334.40, 164,078.40 and 47,049.60

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Solution

The fourth proportional to 109,334.40, 164,078.40 and 47,049.60 is: 70,607.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    109,334.40 : 164,078.40 = 47,049.60 : x
  2. Step 2: Convert to fraction form
    109,334.40/164,078.40 = 47,049.60/x
  3. Step 3: Cross multiply
    109,334.40x = 164,078.40 × 47,049.60
  4. Step 4: Simplify right side
    109,334.40x = 7,719,823,088.64
  5. Step 5: Solve for x
    x = 7,719,823,088.64/109,334.40
  6. Step 6: Final answer
    x = 70,607.45

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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.