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Finding the Fourth Proportional to 84,381, 116,541.45 and 57,476.85

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Solution

The fourth proportional to 84,381, 116,541.45 and 57,476.85 is: 79,383.22

Step by Step Solution

  1. Step 1: Write the proportion equation
    84,381 : 116,541.45 = 57,476.85 : x
  2. Step 2: Convert to fraction form
    84,381/116,541.45 = 57,476.85/x
  3. Step 3: Cross multiply
    84,381x = 116,541.45 × 57,476.85
  4. Step 4: Simplify right side
    84,381x = 6,698,435,440.43
  5. Step 5: Solve for x
    x = 6,698,435,440.43/84,381
  6. Step 6: Final answer
    x = 79,383.22

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Find fourth proportional to 84,382, 116,542.83 and 57,477.85
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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.