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Finding the Fourth Proportional to 117,425.50, 176,137.63 and 28,679.47

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Solution

The fourth proportional to 117,425.50, 176,137.63 and 28,679.47 is: 43,019.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,425.50 : 176,137.63 = 28,679.47 : x
  2. Step 2: Convert to fraction form
    117,425.50/176,137.63 = 28,679.47/x
  3. Step 3: Cross multiply
    117,425.50x = 176,137.63 × 28,679.47
  4. Step 4: Simplify right side
    117,425.50x = 5,051,533,875.46
  5. Step 5: Solve for x
    x = 5,051,533,875.46/117,425.50
  6. Step 6: Final answer
    x = 43,019.05

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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.