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Finding the Fourth Proportional to 47,368.60, 71,052.90 and 39,765.40

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Solution

The fourth proportional to 47,368.60, 71,052.90 and 39,765.40 is: 59,648.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    47,368.60 : 71,052.90 = 39,765.40 : x
  2. Step 2: Convert to fraction form
    47,368.60/71,052.90 = 39,765.40/x
  3. Step 3: Cross multiply
    47,368.60x = 71,052.90 × 39,765.40
  4. Step 4: Simplify right side
    47,368.60x = 2,825,446,989.66
  5. Step 5: Solve for x
    x = 2,825,446,989.66/47,368.60
  6. Step 6: Final answer
    x = 59,648.10

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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.