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Finding the Fourth Proportional to 16,671.18, 23,005.95 and 9,219.18

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Solution

The fourth proportional to 16,671.18, 23,005.95 and 9,219.18 is: 12,722.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,671.18 : 23,005.95 = 9,219.18 : x
  2. Step 2: Convert to fraction form
    16,671.18/23,005.95 = 9,219.18/x
  3. Step 3: Cross multiply
    16,671.18x = 23,005.95 × 9,219.18
  4. Step 4: Simplify right side
    16,671.18x = 212,095,994.12
  5. Step 5: Solve for x
    x = 212,095,994.12/16,671.18
  6. Step 6: Final answer
    x = 12,722.31

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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.