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Finding the Fourth Proportional to 18,085.64, 24,959.51 and 10,917.30

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Solution

The fourth proportional to 18,085.64, 24,959.51 and 10,917.30 is: 15,066.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,085.64 : 24,959.51 = 10,917.30 : x
  2. Step 2: Convert to fraction form
    18,085.64/24,959.51 = 10,917.30/x
  3. Step 3: Cross multiply
    18,085.64x = 24,959.51 × 10,917.30
  4. Step 4: Simplify right side
    18,085.64x = 272,490,403.94
  5. Step 5: Solve for x
    x = 272,490,403.94/18,085.64
  6. Step 6: Final answer
    x = 15,066.68

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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.