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Finding the Fourth Proportional to 61,400.99, 84,743.72 and 35,555.78

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Solution

The fourth proportional to 61,400.99, 84,743.72 and 35,555.78 is: 49,072.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,400.99 : 84,743.72 = 35,555.78 : x
  2. Step 2: Convert to fraction form
    61,400.99/84,743.72 = 35,555.78/x
  3. Step 3: Cross multiply
    61,400.99x = 84,743.72 × 35,555.78
  4. Step 4: Simplify right side
    61,400.99x = 3,013,128,463.20
  5. Step 5: Solve for x
    x = 3,013,128,463.20/61,400.99
  6. Step 6: Final answer
    x = 49,072.97

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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.