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Finding the Fourth Proportional to 19,011.06, 28,521.45 and 7,914.06

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Solution

The fourth proportional to 19,011.06, 28,521.45 and 7,914.06 is: 11,873.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,011.06 : 28,521.45 = 7,914.06 : x
  2. Step 2: Convert to fraction form
    19,011.06/28,521.45 = 7,914.06/x
  3. Step 3: Cross multiply
    19,011.06x = 28,521.45 × 7,914.06
  4. Step 4: Simplify right side
    19,011.06x = 225,720,466.59
  5. Step 5: Solve for x
    x = 225,720,466.59/19,011.06
  6. Step 6: Final answer
    x = 11,873.11

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.