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Finding the Fourth Proportional to 19,356.93, 26,712.09 and 10,859.09

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Solution

The fourth proportional to 19,356.93, 26,712.09 and 10,859.09 is: 14,985.27

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,356.93 : 26,712.09 = 10,859.09 : x
  2. Step 2: Convert to fraction form
    19,356.93/26,712.09 = 10,859.09/x
  3. Step 3: Cross multiply
    19,356.93x = 26,712.09 × 10,859.09
  4. Step 4: Simplify right side
    19,356.93x = 290,068,855.84
  5. Step 5: Solve for x
    x = 290,068,855.84/19,356.93
  6. Step 6: Final answer
    x = 14,985.27

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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.