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Finding the Fourth Proportional to 7,243,591.60, 10,866,699.60 and 3,640,290.40

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Solution

The fourth proportional to 7,243,591.60, 10,866,699.60 and 3,640,290.40 is: 5,461,095.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    7,243,591.60 : 10,866,699.60 = 3,640,290.40 : x
  2. Step 2: Convert to fraction form
    7,243,591.60/10,866,699.60 = 3,640,290.40/x
  3. Step 3: Cross multiply
    7,243,591.60x = 10,866,699.60 × 3,640,290.40
  4. Step 4: Simplify right side
    7,243,591.60x = 39,557,942,233,563.84
  5. Step 5: Solve for x
    x = 39,557,942,233,563.84/7,243,591.60
  6. Step 6: Final answer
    x = 5,461,095.05

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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.