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Finding the Fourth Proportional to 117,739.60, 176,607.88 and 28,993.88

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Solution

The fourth proportional to 117,739.60, 176,607.88 and 28,993.88 is: 43,490.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,739.60 : 176,607.88 = 28,993.88 : x
  2. Step 2: Convert to fraction form
    117,739.60/176,607.88 = 28,993.88/x
  3. Step 3: Cross multiply
    117,739.60x = 176,607.88 × 28,993.88
  4. Step 4: Simplify right side
    117,739.60x = 5,120,548,048.81
  5. Step 5: Solve for x
    x = 5,120,548,048.81/117,739.60
  6. Step 6: Final answer
    x = 43,490.45

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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.