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Finding the Fourth Proportional to 83,813.36, 115,661.10 and 45,573.66

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Solution

The fourth proportional to 83,813.36, 115,661.10 and 45,573.66 is: 62,890.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,813.36 : 115,661.10 = 45,573.66 : x
  2. Step 2: Convert to fraction form
    83,813.36/115,661.10 = 45,573.66/x
  3. Step 3: Cross multiply
    83,813.36x = 115,661.10 × 45,573.66
  4. Step 4: Simplify right side
    83,813.36x = 5,271,099,646.63
  5. Step 5: Solve for x
    x = 5,271,099,646.63/83,813.36
  6. Step 6: Final answer
    x = 62,890.92

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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.