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Finding the Fourth Proportional to 61,155.19, 84,386 and 33,930.84

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Solution

The fourth proportional to 61,155.19, 84,386 and 33,930.84 is: 46,820.03

Step by Step Solution

  1. Step 1: Write the proportion equation
    61,155.19 : 84,386 = 33,930.84 : x
  2. Step 2: Convert to fraction form
    61,155.19/84,386 = 33,930.84/x
  3. Step 3: Cross multiply
    61,155.19x = 84,386 × 33,930.84
  4. Step 4: Simplify right side
    61,155.19x = 2,863,287,864.24
  5. Step 5: Solve for x
    x = 2,863,287,864.24/61,155.19
  6. Step 6: Final answer
    x = 46,820.03

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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.