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Finding the Fourth Proportional to 117,803.80, 162,565.54 and 64,087.44

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Solution

The fourth proportional to 117,803.80, 162,565.54 and 64,087.44 is: 88,438.65

Step by Step Solution

  1. Step 1: Write the proportion equation
    117,803.80 : 162,565.54 = 64,087.44 : x
  2. Step 2: Convert to fraction form
    117,803.80/162,565.54 = 64,087.44/x
  3. Step 3: Cross multiply
    117,803.80x = 162,565.54 × 64,087.44
  4. Step 4: Simplify right side
    117,803.80x = 10,418,409,290.82
  5. Step 5: Solve for x
    x = 10,418,409,290.82/117,803.80
  6. Step 6: Final answer
    x = 88,438.65

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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.