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Finding the Fourth Proportional to 69,897.64, 104,772.60 and 47,655.88

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Solution

The fourth proportional to 69,897.64, 104,772.60 and 47,655.88 is: 71,433.46

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,897.64 : 104,772.60 = 47,655.88 : x
  2. Step 2: Convert to fraction form
    69,897.64/104,772.60 = 47,655.88/x
  3. Step 3: Cross multiply
    69,897.64x = 104,772.60 × 47,655.88
  4. Step 4: Simplify right side
    69,897.64x = 4,993,030,452.89
  5. Step 5: Solve for x
    x = 4,993,030,452.89/69,897.64
  6. Step 6: Final answer
    x = 71,433.46

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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.