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Finding the Fourth Proportional to 18,495.76, 25,520.16 and 10,535.80

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Solution

The fourth proportional to 18,495.76, 25,520.16 and 10,535.80 is: 14,537.13

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,495.76 : 25,520.16 = 10,535.80 : x
  2. Step 2: Convert to fraction form
    18,495.76/25,520.16 = 10,535.80/x
  3. Step 3: Cross multiply
    18,495.76x = 25,520.16 × 10,535.80
  4. Step 4: Simplify right side
    18,495.76x = 268,875,301.73
  5. Step 5: Solve for x
    x = 268,875,301.73/18,495.76
  6. Step 6: Final answer
    x = 14,537.13

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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.