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Finding the Fourth Proportional to 88,324, 121,887.76 and 48,580

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Solution

The fourth proportional to 88,324, 121,887.76 and 48,580 is: 67,040.75

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,324 : 121,887.76 = 48,580 : x
  2. Step 2: Convert to fraction form
    88,324/121,887.76 = 48,580/x
  3. Step 3: Cross multiply
    88,324x = 121,887.76 × 48,580
  4. Step 4: Simplify right side
    88,324x = 5,921,307,380.80
  5. Step 5: Solve for x
    x = 5,921,307,380.80/88,324
  6. Step 6: Final answer
    x = 67,040.75

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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.