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Finding the Fourth Proportional to 19,507.68, 26,920.64 and 11,124.64

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Solution

The fourth proportional to 19,507.68, 26,920.64 and 11,124.64 is: 15,352.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,507.68 : 26,920.64 = 11,124.64 : x
  2. Step 2: Convert to fraction form
    19,507.68/26,920.64 = 11,124.64/x
  3. Step 3: Cross multiply
    19,507.68x = 26,920.64 × 11,124.64
  4. Step 4: Simplify right side
    19,507.68x = 299,482,428.57
  5. Step 5: Solve for x
    x = 299,482,428.57/19,507.68
  6. Step 6: Final answer
    x = 15,352.03

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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.