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Finding the Fourth Proportional to 103,698.64, 155,540.64 and 59,185.90

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Solution

The fourth proportional to 103,698.64, 155,540.64 and 59,185.90 is: 88,774.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    103,698.64 : 155,540.64 = 59,185.90 : x
  2. Step 2: Convert to fraction form
    103,698.64/155,540.64 = 59,185.90/x
  3. Step 3: Cross multiply
    103,698.64x = 155,540.64 × 59,185.90
  4. Step 4: Simplify right side
    103,698.64x = 9,205,812,764.98
  5. Step 5: Solve for x
    x = 9,205,812,764.98/103,698.64
  6. Step 6: Final answer
    x = 88,774.67

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Why These Related Problems?

These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.