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Finding the Fourth Proportional to 571,912.40, 857,285.40 and 335,133.20

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Solution

The fourth proportional to 571,912.40, 857,285.40 and 335,133.20 is: 502,358.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    571,912.40 : 857,285.40 = 335,133.20 : x
  2. Step 2: Convert to fraction form
    571,912.40/857,285.40 = 335,133.20/x
  3. Step 3: Cross multiply
    571,912.40x = 857,285.40 × 335,133.20
  4. Step 4: Simplify right side
    571,912.40x = 287,304,799,415.28
  5. Step 5: Solve for x
    x = 287,304,799,415.28/571,912.40
  6. Step 6: Final answer
    x = 502,358.05

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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.