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Finding the Fourth Proportional to 18,178.76, 25,087.01 and 10,113.06

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Solution

The fourth proportional to 18,178.76, 25,087.01 and 10,113.06 is: 13,956.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,178.76 : 25,087.01 = 10,113.06 : x
  2. Step 2: Convert to fraction form
    18,178.76/25,087.01 = 10,113.06/x
  3. Step 3: Cross multiply
    18,178.76x = 25,087.01 × 10,113.06
  4. Step 4: Simplify right side
    18,178.76x = 253,706,386.79
  5. Step 5: Solve for x
    x = 253,706,386.79/18,178.76
  6. Step 6: Final answer
    x = 13,956.20

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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.