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Finding the Fourth Proportional to 88,648.64, 122,565.60 and 84,731.84

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Solution

The fourth proportional to 88,648.64, 122,565.60 and 84,731.84 is: 117,150.23

Step by Step Solution

  1. Step 1: Write the proportion equation
    88,648.64 : 122,565.60 = 84,731.84 : x
  2. Step 2: Convert to fraction form
    88,648.64/122,565.60 = 84,731.84/x
  3. Step 3: Cross multiply
    88,648.64x = 122,565.60 × 84,731.84
  4. Step 4: Simplify right side
    88,648.64x = 10,385,208,808.70
  5. Step 5: Solve for x
    x = 10,385,208,808.70/88,648.64
  6. Step 6: Final answer
    x = 117,150.23

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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.