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Finding the Fourth Proportional to 19,509.77, 26,918.80 and 11,852.89

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Solution

The fourth proportional to 19,509.77, 26,918.80 and 11,852.89 is: 16,354.14

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,509.77 : 26,918.80 = 11,852.89 : x
  2. Step 2: Convert to fraction form
    19,509.77/26,918.80 = 11,852.89/x
  3. Step 3: Cross multiply
    19,509.77x = 26,918.80 × 11,852.89
  4. Step 4: Simplify right side
    19,509.77x = 319,065,448.77
  5. Step 5: Solve for x
    x = 319,065,448.77/19,509.77
  6. Step 6: Final answer
    x = 16,354.14

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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.