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Finding the Fourth Proportional to 88,005.66, 121,447.65 and 49,243.51

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Solution

The fourth proportional to 88,005.66, 121,447.65 and 49,243.51 is: 67,955.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,005.66 : 121,447.65 = 49,243.51 : x
  2. Step 2: Convert to fraction form
    88,005.66/121,447.65 = 49,243.51/x
  3. Step 3: Cross multiply
    88,005.66x = 121,447.65 × 49,243.51
  4. Step 4: Simplify right side
    88,005.66x = 5,980,508,567.25
  5. Step 5: Solve for x
    x = 5,980,508,567.25/88,005.66
  6. Step 6: Final answer
    x = 67,955.95

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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.