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Finding the Fourth Proportional to 19,013.95, 28,501.77 and 7,926.77

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Solution

The fourth proportional to 19,013.95, 28,501.77 and 7,926.77 is: 11,882.17

Step by Step Solution

  1. Step 1: Write the proportion equation
    19,013.95 : 28,501.77 = 7,926.77 : x
  2. Step 2: Convert to fraction form
    19,013.95/28,501.77 = 7,926.77/x
  3. Step 3: Cross multiply
    19,013.95x = 28,501.77 × 7,926.77
  4. Step 4: Simplify right side
    19,013.95x = 225,926,975.38
  5. Step 5: Solve for x
    x = 225,926,975.38/19,013.95
  6. Step 6: Final answer
    x = 11,882.17

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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.