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Finding the Fourth Proportional to 88,398.51, 121,989.94 and 48,112.56

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Solution

The fourth proportional to 88,398.51, 121,989.94 and 48,112.56 is: 66,395.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,398.51 : 121,989.94 = 48,112.56 : x
  2. Step 2: Convert to fraction form
    88,398.51/121,989.94 = 48,112.56/x
  3. Step 3: Cross multiply
    88,398.51x = 121,989.94 × 48,112.56
  4. Step 4: Simplify right side
    88,398.51x = 5,869,248,074.60
  5. Step 5: Solve for x
    x = 5,869,248,074.60/88,398.51
  6. Step 6: Final answer
    x = 66,395.33

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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.