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Finding the Fourth Proportional to 12,958.74, 17,859.63 and 9,750.26

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Solution

The fourth proportional to 12,958.74, 17,859.63 and 9,750.26 is: 13,437.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    12,958.74 : 17,859.63 = 9,750.26 : x
  2. Step 2: Convert to fraction form
    12,958.74/17,859.63 = 9,750.26/x
  3. Step 3: Cross multiply
    12,958.74x = 17,859.63 × 9,750.26
  4. Step 4: Simplify right side
    12,958.74x = 174,135,946.71
  5. Step 5: Solve for x
    x = 174,135,946.71/12,958.74
  6. Step 6: Final answer
    x = 13,437.72

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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.