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Finding the Fourth Proportional to 186,866.80, 280,133.55 and 68,510.56

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Solution

The fourth proportional to 186,866.80, 280,133.55 and 68,510.56 is: 102,704.74

Step by Step Solution

  1. Step 1: Write the proportion equation
    186,866.80 : 280,133.55 = 68,510.56 : x
  2. Step 2: Convert to fraction form
    186,866.80/280,133.55 = 68,510.56/x
  3. Step 3: Cross multiply
    186,866.80x = 280,133.55 × 68,510.56
  4. Step 4: Simplify right side
    186,866.80x = 19,192,106,385.29
  5. Step 5: Solve for x
    x = 19,192,106,385.29/186,866.80
  6. Step 6: Final answer
    x = 102,704.74

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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.