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Finding the Fourth Proportional to 128,251.49, 177,036.44 and 114,799.01

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Solution

The fourth proportional to 128,251.49, 177,036.44 and 114,799.01 is: 158,466.83

Step by Step Solution

  1. Step 1: Write the proportion equation
    128,251.49 : 177,036.44 = 114,799.01 : x
  2. Step 2: Convert to fraction form
    128,251.49/177,036.44 = 114,799.01/x
  3. Step 3: Cross multiply
    128,251.49x = 177,036.44 × 114,799.01
  4. Step 4: Simplify right side
    128,251.49x = 20,323,606,586.75
  5. Step 5: Solve for x
    x = 20,323,606,586.75/128,251.49
  6. Step 6: Final answer
    x = 158,466.83

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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.