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Finding the Fourth Proportional to 243,886.87, 365,793.31 and 66,407.84

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Solution

The fourth proportional to 243,886.87, 365,793.31 and 66,407.84 is: 99,601.69

Step by Step Solution

  1. Step 1: Write the proportion equation
    243,886.87 : 365,793.31 = 66,407.84 : x
  2. Step 2: Convert to fraction form
    243,886.87/365,793.31 = 66,407.84/x
  3. Step 3: Cross multiply
    243,886.87x = 365,793.31 × 66,407.84
  4. Step 4: Simplify right side
    243,886.87x = 24,291,543,603.55
  5. Step 5: Solve for x
    x = 24,291,543,603.55/243,886.87
  6. Step 6: Final answer
    x = 99,601.69

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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.