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Finding the Fourth Proportional to 127,245.28, 190,890.28 and 48,366.40

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Solution

The fourth proportional to 127,245.28, 190,890.28 and 48,366.40 is: 72,558.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    127,245.28 : 190,890.28 = 48,366.40 : x
  2. Step 2: Convert to fraction form
    127,245.28/190,890.28 = 48,366.40/x
  3. Step 3: Cross multiply
    127,245.28x = 190,890.28 × 48,366.40
  4. Step 4: Simplify right side
    127,245.28x = 9,232,675,638.59
  5. Step 5: Solve for x
    x = 9,232,675,638.59/127,245.28
  6. Step 6: Final answer
    x = 72,558.10

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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.