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Finding the Fourth Proportional to 60,482,994.60, 90,724,491.90 and 20,093,478.60

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Solution

The fourth proportional to 60,482,994.60, 90,724,491.90 and 20,093,478.60 is: 30,140,217.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,482,994.60 : 90,724,491.90 = 20,093,478.60 : x
  2. Step 2: Convert to fraction form
    60,482,994.60/90,724,491.90 = 20,093,478.60/x
  3. Step 3: Cross multiply
    60,482,994.60x = 90,724,491.90 × 20,093,478.60
  4. Step 4: Simplify right side
    60,482,994.60x = 1,822,970,636,488,523.50
  5. Step 5: Solve for x
    x = 1,822,970,636,488,523.50/60,482,994.60
  6. Step 6: Final answer
    x = 30,140,217.90

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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.