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Finding the Fourth Proportional to 125,059.71, 187,590.02 and 30,289.97

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Solution

The fourth proportional to 125,059.71, 187,590.02 and 30,289.97 is: 45,435.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    125,059.71 : 187,590.02 = 30,289.97 : x
  2. Step 2: Convert to fraction form
    125,059.71/187,590.02 = 30,289.97/x
  3. Step 3: Cross multiply
    125,059.71x = 187,590.02 × 30,289.97
  4. Step 4: Simplify right side
    125,059.71x = 5,682,095,510.81
  5. Step 5: Solve for x
    x = 5,682,095,510.81/125,059.71
  6. Step 6: Final answer
    x = 45,435.06

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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.