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Finding the Fourth Proportional to 18,139.68, 25,035.06 and 10,184.46

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Solution

The fourth proportional to 18,139.68, 25,035.06 and 10,184.46 is: 14,055.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,139.68 : 25,035.06 = 10,184.46 : x
  2. Step 2: Convert to fraction form
    18,139.68/25,035.06 = 10,184.46/x
  3. Step 3: Cross multiply
    18,139.68x = 25,035.06 × 10,184.46
  4. Step 4: Simplify right side
    18,139.68x = 254,968,567.17
  5. Step 5: Solve for x
    x = 254,968,567.17/18,139.68
  6. Step 6: Final answer
    x = 14,055.85

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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.