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Finding the Fourth Proportional to 88,261, 121,800.18 and 48,517

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Solution

The fourth proportional to 88,261, 121,800.18 and 48,517 is: 66,953.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,261 : 121,800.18 = 48,517 : x
  2. Step 2: Convert to fraction form
    88,261/121,800.18 = 48,517/x
  3. Step 3: Cross multiply
    88,261x = 121,800.18 × 48,517
  4. Step 4: Simplify right side
    88,261x = 5,909,379,333.06
  5. Step 5: Solve for x
    x = 5,909,379,333.06/88,261
  6. Step 6: Final answer
    x = 66,953.46

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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.