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Finding the Fourth Proportional to 16,387.62, 22,617.54 and 9,316.32

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Solution

The fourth proportional to 16,387.62, 22,617.54 and 9,316.32 is: 12,858.01

Step by Step Solution

  1. Step 1: Write the proportion equation
    16,387.62 : 22,617.54 = 9,316.32 : x
  2. Step 2: Convert to fraction form
    16,387.62/22,617.54 = 9,316.32/x
  3. Step 3: Cross multiply
    16,387.62x = 22,617.54 × 9,316.32
  4. Step 4: Simplify right side
    16,387.62x = 210,712,240.25
  5. Step 5: Solve for x
    x = 210,712,240.25/16,387.62
  6. Step 6: Final answer
    x = 12,858.01

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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.