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Finding the Fourth Proportional to 19,005.65, 26,230.41 and 10,939.14

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Solution

The fourth proportional to 19,005.65, 26,230.41 and 10,939.14 is: 15,097.52

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,005.65 : 26,230.41 = 10,939.14 : x
  2. Step 2: Convert to fraction form
    19,005.65/26,230.41 = 10,939.14/x
  3. Step 3: Cross multiply
    19,005.65x = 26,230.41 × 10,939.14
  4. Step 4: Simplify right side
    19,005.65x = 286,938,127.25
  5. Step 5: Solve for x
    x = 286,938,127.25/19,005.65
  6. Step 6: Final answer
    x = 15,097.52

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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.