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Finding the Fourth Proportional to 18,707.55, 25,812.84 and 10,750.11

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Solution

The fourth proportional to 18,707.55, 25,812.84 and 10,750.11 is: 14,833.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,707.55 : 25,812.84 = 10,750.11 : x
  2. Step 2: Convert to fraction form
    18,707.55/25,812.84 = 10,750.11/x
  3. Step 3: Cross multiply
    18,707.55x = 25,812.84 × 10,750.11
  4. Step 4: Simplify right side
    18,707.55x = 277,490,869.41
  5. Step 5: Solve for x
    x = 277,490,869.41/18,707.55
  6. Step 6: Final answer
    x = 14,833.10

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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.