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Finding the Fourth Proportional to 18,683.76, 28,025.29 and 7,582.82

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Solution

The fourth proportional to 18,683.76, 28,025.29 and 7,582.82 is: 11,374.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,683.76 : 28,025.29 = 7,582.82 : x
  2. Step 2: Convert to fraction form
    18,683.76/28,025.29 = 7,582.82/x
  3. Step 3: Cross multiply
    18,683.76x = 28,025.29 × 7,582.82
  4. Step 4: Simplify right side
    18,683.76x = 212,510,598.87
  5. Step 5: Solve for x
    x = 212,510,598.87/18,683.76
  6. Step 6: Final answer
    x = 11,374.08

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.