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Finding the Fourth Proportional to 60,482,901.60, 90,724,352.40 and 20,093,385.60

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Solution

The fourth proportional to 60,482,901.60, 90,724,352.40 and 20,093,385.60 is: 30,140,078.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    60,482,901.60 : 90,724,352.40 = 20,093,385.60 : x
  2. Step 2: Convert to fraction form
    60,482,901.60/90,724,352.40 = 20,093,385.60/x
  3. Step 3: Cross multiply
    60,482,901.60x = 90,724,352.40 × 20,093,385.60
  4. Step 4: Simplify right side
    60,482,901.60x = 1,822,959,396,083,485.75
  5. Step 5: Solve for x
    x = 1,822,959,396,083,485.75/60,482,901.60
  6. Step 6: Final answer
    x = 30,140,078.40

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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.