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Finding the Fourth Proportional to 13,673.80, 20,510.70 and 10,001.80

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Solution

The fourth proportional to 13,673.80, 20,510.70 and 10,001.80 is: 15,002.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    13,673.80 : 20,510.70 = 10,001.80 : x
  2. Step 2: Convert to fraction form
    13,673.80/20,510.70 = 10,001.80/x
  3. Step 3: Cross multiply
    13,673.80x = 20,510.70 × 10,001.80
  4. Step 4: Simplify right side
    13,673.80x = 205,143,919.26
  5. Step 5: Solve for x
    x = 205,143,919.26/13,673.80
  6. Step 6: Final answer
    x = 15,002.70

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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.