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Finding the Fourth Proportional to 81,888.39, 113,007.03 and 46,078.47

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Solution

The fourth proportional to 81,888.39, 113,007.03 and 46,078.47 is: 63,588.88

Step by Step Solution

  1. Step 1: Write the proportion equation
    81,888.39 : 113,007.03 = 46,078.47 : x
  2. Step 2: Convert to fraction form
    81,888.39/113,007.03 = 46,078.47/x
  3. Step 3: Cross multiply
    81,888.39x = 113,007.03 × 46,078.47
  4. Step 4: Simplify right side
    81,888.39x = 5,207,191,041.64
  5. Step 5: Solve for x
    x = 5,207,191,041.64/81,888.39
  6. Step 6: Final answer
    x = 63,588.88

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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.