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Finding the Fourth Proportional to 112,266.88, 154,924.44 and 66,921.50

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Solution

The fourth proportional to 112,266.88, 154,924.44 and 66,921.50 is: 92,349.37

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,266.88 : 154,924.44 = 66,921.50 : x
  2. Step 2: Convert to fraction form
    112,266.88/154,924.44 = 66,921.50/x
  3. Step 3: Cross multiply
    112,266.88x = 154,924.44 × 66,921.50
  4. Step 4: Simplify right side
    112,266.88x = 10,367,775,911.46
  5. Step 5: Solve for x
    x = 10,367,775,911.46/112,266.88
  6. Step 6: Final answer
    x = 92,349.37

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.