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Finding the Fourth Proportional to 25,987.63, 38,971.77 and 9,343.12

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Solution

The fourth proportional to 25,987.63, 38,971.77 and 9,343.12 is: 14,011.20

Step by Step Solution

  1. Step 1: Write the proportion equation
    25,987.63 : 38,971.77 = 9,343.12 : x
  2. Step 2: Convert to fraction form
    25,987.63/38,971.77 = 9,343.12/x
  3. Step 3: Cross multiply
    25,987.63x = 38,971.77 × 9,343.12
  4. Step 4: Simplify right side
    25,987.63x = 364,117,923.72
  5. Step 5: Solve for x
    x = 364,117,923.72/25,987.63
  6. Step 6: Final answer
    x = 14,011.20

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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.