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Finding the Fourth Proportional to 18,051.59, 24,918.77 and 10,980.47

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Solution

The fourth proportional to 18,051.59, 24,918.77 and 10,980.47 is: 15,157.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,051.59 : 24,918.77 = 10,980.47 : x
  2. Step 2: Convert to fraction form
    18,051.59/24,918.77 = 10,980.47/x
  3. Step 3: Cross multiply
    18,051.59x = 24,918.77 × 10,980.47
  4. Step 4: Simplify right side
    18,051.59x = 273,619,681.83
  5. Step 5: Solve for x
    x = 273,619,681.83/18,051.59
  6. Step 6: Final answer
    x = 15,157.65

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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.