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Finding the Fourth Proportional to 186,866.55, 280,133.17 and 68,510.31

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Solution

The fourth proportional to 186,866.55, 280,133.17 and 68,510.31 is: 102,704.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,866.55 : 280,133.17 = 68,510.31 : x
  2. Step 2: Convert to fraction form
    186,866.55/280,133.17 = 68,510.31/x
  3. Step 3: Cross multiply
    186,866.55x = 280,133.17 × 68,510.31
  4. Step 4: Simplify right side
    186,866.55x = 19,192,010,317.98
  5. Step 5: Solve for x
    x = 19,192,010,317.98/186,866.55
  6. Step 6: Final answer
    x = 102,704.36

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1.5x scale

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.