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Finding the Fourth Proportional to 186,405.66, 279,610.31 and 53,285.00

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Solution

The fourth proportional to 186,405.66, 279,610.31 and 53,285.00 is: 79,928.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,405.66 : 279,610.31 = 53,285.00 : x
  2. Step 2: Convert to fraction form
    186,405.66/279,610.31 = 53,285.00/x
  3. Step 3: Cross multiply
    186,405.66x = 279,610.31 × 53,285.00
  4. Step 4: Simplify right side
    186,405.66x = 14,899,033,703.87
  5. Step 5: Solve for x
    x = 14,899,033,703.87/186,405.66
  6. Step 6: Final answer
    x = 79,928.01

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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.