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Finding the Fourth Proportional to 18,510.94, 25,545.74 and 10,127.44

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Solution

The fourth proportional to 18,510.94, 25,545.74 and 10,127.44 is: 13,976.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.94 : 25,545.74 = 10,127.44 : x
  2. Step 2: Convert to fraction form
    18,510.94/25,545.74 = 10,127.44/x
  3. Step 3: Cross multiply
    18,510.94x = 25,545.74 × 10,127.44
  4. Step 4: Simplify right side
    18,510.94x = 258,712,834.60
  5. Step 5: Solve for x
    x = 258,712,834.60/18,510.94
  6. Step 6: Final answer
    x = 13,976.21

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.