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Finding the Fourth Proportional to 12,959.64, 19,444.62 and 5,173.92

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Solution

The fourth proportional to 12,959.64, 19,444.62 and 5,173.92 is: 7,762.94

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,959.64 : 19,444.62 = 5,173.92 : x
  2. Step 2: Convert to fraction form
    12,959.64/19,444.62 = 5,173.92/x
  3. Step 3: Cross multiply
    12,959.64x = 19,444.62 × 5,173.92
  4. Step 4: Simplify right side
    12,959.64x = 100,604,908.31
  5. Step 5: Solve for x
    x = 100,604,908.31/12,959.64
  6. Step 6: Final answer
    x = 7,762.94

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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.