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Finding the Fourth Proportional to 69,505,813.10, 104,258,719.65 and 64,131,041.90

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Solution

The fourth proportional to 69,505,813.10, 104,258,719.65 and 64,131,041.90 is: 96,196,562.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    69,505,813.10 : 104,258,719.65 = 64,131,041.90 : x
  2. Step 2: Convert to fraction form
    69,505,813.10/104,258,719.65 = 64,131,041.90/x
  3. Step 3: Cross multiply
    69,505,813.10x = 104,258,719.65 × 64,131,041.90
  4. Step 4: Simplify right side
    69,505,813.10x = 6,686,220,318,314,504
  5. Step 5: Solve for x
    x = 6,686,220,318,314,504/69,505,813.10
  6. Step 6: Final answer
    x = 96,196,562.85

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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.