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Finding the Fourth Proportional to 189,573.71, 284,281.19 and 77,177.51

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Solution

The fourth proportional to 189,573.71, 284,281.19 and 77,177.51 is: 115,733.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    189,573.71 : 284,281.19 = 77,177.51 : x
  2. Step 2: Convert to fraction form
    189,573.71/284,281.19 = 77,177.51/x
  3. Step 3: Cross multiply
    189,573.71x = 284,281.19 × 77,177.51
  4. Step 4: Simplify right side
    189,573.71x = 21,940,112,576.74
  5. Step 5: Solve for x
    x = 21,940,112,576.74/189,573.71
  6. Step 6: Final answer
    x = 115,733.94

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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.