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Finding the Fourth Proportional to 15,979.42, 23,980.02 and 5,591.08

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Solution

The fourth proportional to 15,979.42, 23,980.02 and 5,591.08 is: 8,390.43

Step by Step Solution

  1. Step 1: Write the proportion equation
    15,979.42 : 23,980.02 = 5,591.08 : x
  2. Step 2: Convert to fraction form
    15,979.42/23,980.02 = 5,591.08/x
  3. Step 3: Cross multiply
    15,979.42x = 23,980.02 × 5,591.08
  4. Step 4: Simplify right side
    15,979.42x = 134,074,210.22
  5. Step 5: Solve for x
    x = 134,074,210.22/15,979.42
  6. Step 6: Final answer
    x = 8,390.43

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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.