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Finding the Fourth Proportional to 70,656.01, 105,972.98 and 45,871.83

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Solution

The fourth proportional to 70,656.01, 105,972.98 and 45,871.83 is: 68,800.58

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,656.01 : 105,972.98 = 45,871.83 : x
  2. Step 2: Convert to fraction form
    70,656.01/105,972.98 = 45,871.83/x
  3. Step 3: Cross multiply
    70,656.01x = 105,972.98 × 45,871.83
  4. Step 4: Simplify right side
    70,656.01x = 4,861,174,293.79
  5. Step 5: Solve for x
    x = 4,861,174,293.79/70,656.01
  6. Step 6: Final answer
    x = 68,800.58

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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.