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Finding the Fourth Proportional to 14,618.72, 21,934.32 and 9,690.08

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Solution

The fourth proportional to 14,618.72, 21,934.32 and 9,690.08 is: 14,539.26

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,618.72 : 21,934.32 = 9,690.08 : x
  2. Step 2: Convert to fraction form
    14,618.72/21,934.32 = 9,690.08/x
  3. Step 3: Cross multiply
    14,618.72x = 21,934.32 × 9,690.08
  4. Step 4: Simplify right side
    14,618.72x = 212,545,315.55
  5. Step 5: Solve for x
    x = 212,545,315.55/14,618.72
  6. Step 6: Final answer
    x = 14,539.26

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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.