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Finding the Fourth Proportional to 185,956.79, 256,614.98 and 105,391.76

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Solution

The fourth proportional to 185,956.79, 256,614.98 and 105,391.76 is: 145,437.57

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,956.79 : 256,614.98 = 105,391.76 : x
  2. Step 2: Convert to fraction form
    185,956.79/256,614.98 = 105,391.76/x
  3. Step 3: Cross multiply
    185,956.79x = 256,614.98 × 105,391.76
  4. Step 4: Simplify right side
    185,956.79x = 27,045,103,932.06
  5. Step 5: Solve for x
    x = 27,045,103,932.06/185,956.79
  6. Step 6: Final answer
    x = 145,437.57

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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.