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Finding the Fourth Proportional to 14,009.48, 19,335.21 and 7,961.48

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Solution

The fourth proportional to 14,009.48, 19,335.21 and 7,961.48 is: 10,988.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    14,009.48 : 19,335.21 = 7,961.48 : x
  2. Step 2: Convert to fraction form
    14,009.48/19,335.21 = 7,961.48/x
  3. Step 3: Cross multiply
    14,009.48x = 19,335.21 × 7,961.48
  4. Step 4: Simplify right side
    14,009.48x = 153,936,887.71
  5. Step 5: Solve for x
    x = 153,936,887.71/14,009.48
  6. Step 6: Final answer
    x = 10,988.05

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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.