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Finding the Fourth Proportional to 19,955.64, 27,539.16 and 11,459.16

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Solution

The fourth proportional to 19,955.64, 27,539.16 and 11,459.16 is: 15,813.86

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,955.64 : 27,539.16 = 11,459.16 : x
  2. Step 2: Convert to fraction form
    19,955.64/27,539.16 = 11,459.16/x
  3. Step 3: Cross multiply
    19,955.64x = 27,539.16 × 11,459.16
  4. Step 4: Simplify right side
    19,955.64x = 315,575,640.71
  5. Step 5: Solve for x
    x = 315,575,640.71/19,955.64
  6. Step 6: Final answer
    x = 15,813.86

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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.