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Finding the Fourth Proportional to 83,790, 115,630.40 and 46,064.52

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Solution

The fourth proportional to 83,790, 115,630.40 and 46,064.52 is: 63,569.15

Step by Step Solution

  1. Step 1: Write the proportion equation
    83,790 : 115,630.40 = 46,064.52 : x
  2. Step 2: Convert to fraction form
    83,790/115,630.40 = 46,064.52/x
  3. Step 3: Cross multiply
    83,790x = 115,630.40 × 46,064.52
  4. Step 4: Simplify right side
    83,790x = 5,326,458,873.41
  5. Step 5: Solve for x
    x = 5,326,458,873.41/83,790
  6. Step 6: Final answer
    x = 63,569.15

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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.