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Finding the Fourth Proportional to 19,925.62, 29,653.20 and 19,261.22

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Solution

The fourth proportional to 19,925.62, 29,653.20 and 19,261.22 is: 28,664.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,925.62 : 29,653.20 = 19,261.22 : x
  2. Step 2: Convert to fraction form
    19,925.62/29,653.20 = 19,261.22/x
  3. Step 3: Cross multiply
    19,925.62x = 29,653.20 × 19,261.22
  4. Step 4: Simplify right side
    19,925.62x = 571,156,660.64
  5. Step 5: Solve for x
    x = 571,156,660.64/19,925.62
  6. Step 6: Final answer
    x = 28,664.44

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.49) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.