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Finding the Fourth Proportional to 70,487.60, 105,523.98 and 47,055.92

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Solution

The fourth proportional to 70,487.60, 105,523.98 and 47,055.92 is: 70,445.41

Step by Step Solution

  1. Step 1: Write the proportion equation
    70,487.60 : 105,523.98 = 47,055.92 : x
  2. Step 2: Convert to fraction form
    70,487.60/105,523.98 = 47,055.92/x
  3. Step 3: Cross multiply
    70,487.60x = 105,523.98 × 47,055.92
  4. Step 4: Simplify right side
    70,487.60x = 4,965,527,960.96
  5. Step 5: Solve for x
    x = 4,965,527,960.96/70,487.60
  6. Step 6: Final answer
    x = 70,445.41

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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.