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Finding the Fourth Proportional to 545,873.60, 818,810.40 and 405,905.60

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Solution

The fourth proportional to 545,873.60, 818,810.40 and 405,905.60 is: 608,858.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,873.60 : 818,810.40 = 405,905.60 : x
  2. Step 2: Convert to fraction form
    545,873.60/818,810.40 = 405,905.60/x
  3. Step 3: Cross multiply
    545,873.60x = 818,810.40 × 405,905.60
  4. Step 4: Simplify right side
    545,873.60x = 332,359,726,698.24
  5. Step 5: Solve for x
    x = 332,359,726,698.24/545,873.60
  6. Step 6: Final answer
    x = 608,858.40

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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.