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Finding the Fourth Proportional to 1,461,945.60, 2,188,981.80 and 1,461,945.60

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Solution

The fourth proportional to 1,461,945.60, 2,188,981.80 and 1,461,945.60 is: 2,188,981.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,461,945.60 : 2,188,981.80 = 1,461,945.60 : x
  2. Step 2: Convert to fraction form
    1,461,945.60/2,188,981.80 = 1,461,945.60/x
  3. Step 3: Cross multiply
    1,461,945.60x = 2,188,981.80 × 1,461,945.60
  4. Step 4: Simplify right side
    1,461,945.60x = 3,200,172,310,990.08
  5. Step 5: Solve for x
    x = 3,200,172,310,990.08/1,461,945.60
  6. Step 6: Final answer
    x = 2,188,981.80

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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.