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Finding the Fourth Proportional to 117,625.20, 176,437.80 and 89,977.20

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Solution

The fourth proportional to 117,625.20, 176,437.80 and 89,977.20 is: 134,965.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,625.20 : 176,437.80 = 89,977.20 : x
  2. Step 2: Convert to fraction form
    117,625.20/176,437.80 = 89,977.20/x
  3. Step 3: Cross multiply
    117,625.20x = 176,437.80 × 89,977.20
  4. Step 4: Simplify right side
    117,625.20x = 15,875,379,218.16
  5. Step 5: Solve for x
    x = 15,875,379,218.16/117,625.20
  6. Step 6: Final answer
    x = 134,965.80

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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.