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Finding the Fourth Proportional to 289,790.28, 434,805.12 and 127,601.10

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Solution

The fourth proportional to 289,790.28, 434,805.12 and 127,601.10 is: 191,454.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    289,790.28 : 434,805.12 = 127,601.10 : x
  2. Step 2: Convert to fraction form
    289,790.28/434,805.12 = 127,601.10/x
  3. Step 3: Cross multiply
    289,790.28x = 434,805.12 × 127,601.10
  4. Step 4: Simplify right side
    289,790.28x = 55,481,611,597.63
  5. Step 5: Solve for x
    x = 55,481,611,597.63/289,790.28
  6. Step 6: Final answer
    x = 191,454.36

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1.5x scale

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.