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Finding the Fourth Proportional to 115,891.60, 173,772.60 and 49,320.40

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Solution

The fourth proportional to 115,891.60, 173,772.60 and 49,320.40 is: 73,953.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    115,891.60 : 173,772.60 = 49,320.40 : x
  2. Step 2: Convert to fraction form
    115,891.60/173,772.60 = 49,320.40/x
  3. Step 3: Cross multiply
    115,891.60x = 173,772.60 × 49,320.40
  4. Step 4: Simplify right side
    115,891.60x = 8,570,534,141.04
  5. Step 5: Solve for x
    x = 8,570,534,141.04/115,891.60
  6. Step 6: Final answer
    x = 73,953.02

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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.