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Finding the Fourth Proportional to 18,907.60, 26,089.54 and 10,948.29

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Solution

The fourth proportional to 18,907.60, 26,089.54 and 10,948.29 is: 15,106.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    18,907.60 : 26,089.54 = 10,948.29 : x
  2. Step 2: Convert to fraction form
    18,907.60/26,089.54 = 10,948.29/x
  3. Step 3: Cross multiply
    18,907.60x = 26,089.54 × 10,948.29
  4. Step 4: Simplify right side
    18,907.60x = 285,635,859.64
  5. Step 5: Solve for x
    x = 285,635,859.64/18,907.60
  6. Step 6: Final answer
    x = 15,106.93

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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.