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Finding the Fourth Proportional to 665,877.60, 998,816.40 and 386,114.40

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Solution

The fourth proportional to 665,877.60, 998,816.40 and 386,114.40 is: 579,171.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    665,877.60 : 998,816.40 = 386,114.40 : x
  2. Step 2: Convert to fraction form
    665,877.60/998,816.40 = 386,114.40/x
  3. Step 3: Cross multiply
    665,877.60x = 998,816.40 × 386,114.40
  4. Step 4: Simplify right side
    665,877.60x = 385,657,394,996.16
  5. Step 5: Solve for x
    x = 385,657,394,996.16/665,877.60
  6. Step 6: Final answer
    x = 579,171.60

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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.