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Finding the Fourth Proportional to 117,246.80, 175,697.40 and 99,621.20

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Solution

The fourth proportional to 117,246.80, 175,697.40 and 99,621.20 is: 149,284.98

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,246.80 : 175,697.40 = 99,621.20 : x
  2. Step 2: Convert to fraction form
    117,246.80/175,697.40 = 99,621.20/x
  3. Step 3: Cross multiply
    117,246.80x = 175,697.40 × 99,621.20
  4. Step 4: Simplify right side
    117,246.80x = 17,503,185,824.88
  5. Step 5: Solve for x
    x = 17,503,185,824.88/117,246.80
  6. Step 6: Final answer
    x = 149,284.98

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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.