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Finding the Fourth Proportional to 67,068,280.80, 100,602,421.20 and 47,584,735.20

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Solution

The fourth proportional to 67,068,280.80, 100,602,421.20 and 47,584,735.20 is: 71,377,102.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,068,280.80 : 100,602,421.20 = 47,584,735.20 : x
  2. Step 2: Convert to fraction form
    67,068,280.80/100,602,421.20 = 47,584,735.20/x
  3. Step 3: Cross multiply
    67,068,280.80x = 100,602,421.20 × 47,584,735.20
  4. Step 4: Simplify right side
    67,068,280.80x = 4,787,139,573,280,867
  5. Step 5: Solve for x
    x = 4,787,139,573,280,867/67,068,280.80
  6. Step 6: Final answer
    x = 71,377,102.80

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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.