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Finding the Fourth Proportional to 18,500.76, 25,529.19 and 10,542.51

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Solution

The fourth proportional to 18,500.76, 25,529.19 and 10,542.51 is: 14,547.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,500.76 : 25,529.19 = 10,542.51 : x
  2. Step 2: Convert to fraction form
    18,500.76/25,529.19 = 10,542.51/x
  3. Step 3: Cross multiply
    18,500.76x = 25,529.19 × 10,542.51
  4. Step 4: Simplify right side
    18,500.76x = 269,141,740.87
  5. Step 5: Solve for x
    x = 269,141,740.87/18,500.76
  6. Step 6: Final answer
    x = 14,547.60

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Half scale
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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.