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Finding the Fourth Proportional to 413,043.40, 619,419.30 and 146,812.60

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Solution

The fourth proportional to 413,043.40, 619,419.30 and 146,812.60 is: 220,167.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    413,043.40 : 619,419.30 = 146,812.60 : x
  2. Step 2: Convert to fraction form
    413,043.40/619,419.30 = 146,812.60/x
  3. Step 3: Cross multiply
    413,043.40x = 619,419.30 × 146,812.60
  4. Step 4: Simplify right side
    413,043.40x = 90,938,557,923.18
  5. Step 5: Solve for x
    x = 90,938,557,923.18/413,043.40
  6. Step 6: Final answer
    x = 220,167.08

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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.