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Finding the Fourth Proportional to 54,798.70, 75,620.91 and 30,926.38

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Solution

The fourth proportional to 54,798.70, 75,620.91 and 30,926.38 is: 42,677.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    54,798.70 : 75,620.91 = 30,926.38 : x
  2. Step 2: Convert to fraction form
    54,798.70/75,620.91 = 30,926.38/x
  3. Step 3: Cross multiply
    54,798.70x = 75,620.91 × 30,926.38
  4. Step 4: Simplify right side
    54,798.70x = 2,338,680,998.61
  5. Step 5: Solve for x
    x = 2,338,680,998.61/54,798.70
  6. Step 6: Final answer
    x = 42,677.67

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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.