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Finding the Fourth Proportional to 12,356.35, 18,536.38 and 3,590.12

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Solution

The fourth proportional to 12,356.35, 18,536.38 and 3,590.12 is: 5,385.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,356.35 : 18,536.38 = 3,590.12 : x
  2. Step 2: Convert to fraction form
    12,356.35/18,536.38 = 3,590.12/x
  3. Step 3: Cross multiply
    12,356.35x = 18,536.38 × 3,590.12
  4. Step 4: Simplify right side
    12,356.35x = 66,547,865.93
  5. Step 5: Solve for x
    x = 66,547,865.93/12,356.35
  6. Step 6: Final answer
    x = 5,385.72

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