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Finding the Fourth Proportional to 18,909.88, 26,095.42 and 10,411.82

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Solution

The fourth proportional to 18,909.88, 26,095.42 and 10,411.82 is: 14,368.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,909.88 : 26,095.42 = 10,411.82 : x
  2. Step 2: Convert to fraction form
    18,909.88/26,095.42 = 10,411.82/x
  3. Step 3: Cross multiply
    18,909.88x = 26,095.42 × 10,411.82
  4. Step 4: Simplify right side
    18,909.88x = 271,700,884.48
  5. Step 5: Solve for x
    x = 271,700,884.48/18,909.88
  6. Step 6: Final answer
    x = 14,368.20

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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.