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Finding the Fourth Proportional to 186,738.80, 279,670.80 and 127,252.40

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Solution

The fourth proportional to 186,738.80, 279,670.80 and 127,252.40 is: 190,580.54

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,738.80 : 279,670.80 = 127,252.40 : x
  2. Step 2: Convert to fraction form
    186,738.80/279,670.80 = 127,252.40/x
  3. Step 3: Cross multiply
    186,738.80x = 279,670.80 × 127,252.40
  4. Step 4: Simplify right side
    186,738.80x = 35,588,780,509.92
  5. Step 5: Solve for x
    x = 35,588,780,509.92/186,738.80
  6. Step 6: Final answer
    x = 190,580.54

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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.