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Finding the Fourth Proportional to 12,995.96, 17,913.36 and 10,158.32

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Solution

The fourth proportional to 12,995.96, 17,913.36 and 10,158.32 is: 14,002.02

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,995.96 : 17,913.36 = 10,158.32 : x
  2. Step 2: Convert to fraction form
    12,995.96/17,913.36 = 10,158.32/x
  3. Step 3: Cross multiply
    12,995.96x = 17,913.36 × 10,158.32
  4. Step 4: Simplify right side
    12,995.96x = 181,969,643.16
  5. Step 5: Solve for x
    x = 181,969,643.16/12,995.96
  6. Step 6: Final answer
    x = 14,002.02

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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.