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Finding the Fourth Proportional to 61,939.69, 85,476.87 and 33,645.38

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Solution

The fourth proportional to 61,939.69, 85,476.87 and 33,645.38 is: 46,430.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,939.69 : 85,476.87 = 33,645.38 : x
  2. Step 2: Convert to fraction form
    61,939.69/85,476.87 = 33,645.38/x
  3. Step 3: Cross multiply
    61,939.69x = 85,476.87 × 33,645.38
  4. Step 4: Simplify right side
    61,939.69x = 2,875,901,344.98
  5. Step 5: Solve for x
    x = 2,875,901,344.98/61,939.69
  6. Step 6: Final answer
    x = 46,430.67

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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.