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Finding the Fourth Proportional to 18,510.51, 25,544.48 and 10,443.63

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Solution

The fourth proportional to 18,510.51, 25,544.48 and 10,443.63 is: 14,412.19

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,510.51 : 25,544.48 = 10,443.63 : x
  2. Step 2: Convert to fraction form
    18,510.51/25,544.48 = 10,443.63/x
  3. Step 3: Cross multiply
    18,510.51x = 25,544.48 × 10,443.63
  4. Step 4: Simplify right side
    18,510.51x = 266,777,045.44
  5. Step 5: Solve for x
    x = 266,777,045.44/18,510.51
  6. Step 6: Final answer
    x = 14,412.19

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Half scale
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Double scale
Find fourth proportional to 18,511.51, 25,545.85 and 10,444.63
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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.