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Finding the Fourth Proportional to 19,505.76, 26,918.34 and 11,545.08

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Solution

The fourth proportional to 19,505.76, 26,918.34 and 11,545.08 is: 15,932.44

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,505.76 : 26,918.34 = 11,545.08 : x
  2. Step 2: Convert to fraction form
    19,505.76/26,918.34 = 11,545.08/x
  3. Step 3: Cross multiply
    19,505.76x = 26,918.34 × 11,545.08
  4. Step 4: Simplify right side
    19,505.76x = 310,774,388.77
  5. Step 5: Solve for x
    x = 310,774,388.77/19,505.76
  6. Step 6: Final answer
    x = 15,932.44

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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.