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Finding the Fourth Proportional to 17,916.80, 26,875.20 and 9,622.40

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Solution

The fourth proportional to 17,916.80, 26,875.20 and 9,622.40 is: 14,433.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    17,916.80 : 26,875.20 = 9,622.40 : x
  2. Step 2: Convert to fraction form
    17,916.80/26,875.20 = 9,622.40/x
  3. Step 3: Cross multiply
    17,916.80x = 26,875.20 × 9,622.40
  4. Step 4: Simplify right side
    17,916.80x = 258,603,924.48
  5. Step 5: Solve for x
    x = 258,603,924.48/17,916.80
  6. Step 6: Final answer
    x = 14,433.60

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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.