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Finding the Fourth Proportional to 16,962.40, 23,410.92 and 9,411.16

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Solution

The fourth proportional to 16,962.40, 23,410.92 and 9,411.16 is: 12,988.96

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,962.40 : 23,410.92 = 9,411.16 : x
  2. Step 2: Convert to fraction form
    16,962.40/23,410.92 = 9,411.16/x
  3. Step 3: Cross multiply
    16,962.40x = 23,410.92 × 9,411.16
  4. Step 4: Simplify right side
    16,962.40x = 220,323,948.87
  5. Step 5: Solve for x
    x = 220,323,948.87/16,962.40
  6. Step 6: Final answer
    x = 12,988.96

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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.