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Finding the Fourth Proportional to 73,790,806.80, 110,686,210.20 and 69,610,429.20

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Solution

The fourth proportional to 73,790,806.80, 110,686,210.20 and 69,610,429.20 is: 104,415,643.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    73,790,806.80 : 110,686,210.20 = 69,610,429.20 : x
  2. Step 2: Convert to fraction form
    73,790,806.80/110,686,210.20 = 69,610,429.20/x
  3. Step 3: Cross multiply
    73,790,806.80x = 110,686,210.20 × 69,610,429.20
  4. Step 4: Simplify right side
    73,790,806.80x = 7,704,914,598,543,418
  5. Step 5: Solve for x
    x = 7,704,914,598,543,418/73,790,806.80
  6. Step 6: Final answer
    x = 104,415,643.80

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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.