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Finding the Fourth Proportional to 19,411, 26,787.20 and 10,579

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Solution

The fourth proportional to 19,411, 26,787.20 and 10,579 is: 14,599.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,411 : 26,787.20 = 10,579 : x
  2. Step 2: Convert to fraction form
    19,411/26,787.20 = 10,579/x
  3. Step 3: Cross multiply
    19,411x = 26,787.20 × 10,579
  4. Step 4: Simplify right side
    19,411x = 283,381,788.80
  5. Step 5: Solve for x
    x = 283,381,788.80/19,411
  6. Step 6: Final answer
    x = 14,599.03

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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.