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Finding the Fourth Proportional to 19,509.71, 26,918.71 and 11,852.83

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Solution

The fourth proportional to 19,509.71, 26,918.71 and 11,852.83 is: 16,354.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,509.71 : 26,918.71 = 11,852.83 : x
  2. Step 2: Convert to fraction form
    19,509.71/26,918.71 = 11,852.83/x
  3. Step 3: Cross multiply
    19,509.71x = 26,918.71 × 11,852.83
  4. Step 4: Simplify right side
    19,509.71x = 319,062,758.86
  5. Step 5: Solve for x
    x = 319,062,758.86/19,509.71
  6. Step 6: Final answer
    x = 16,354.05

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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.