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Finding the Fourth Proportional to 48,686.34, 72,972.60 and 43,150.50

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Solution

The fourth proportional to 48,686.34, 72,972.60 and 43,150.50 is: 64,675.31

Step by Step Solution

  1. Step 1: Write the proportion equation
    48,686.34 : 72,972.60 = 43,150.50 : x
  2. Step 2: Convert to fraction form
    48,686.34/72,972.60 = 43,150.50/x
  3. Step 3: Cross multiply
    48,686.34x = 72,972.60 × 43,150.50
  4. Step 4: Simplify right side
    48,686.34x = 3,148,804,176.30
  5. Step 5: Solve for x
    x = 3,148,804,176.30/48,686.34
  6. Step 6: Final answer
    x = 64,675.31

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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.