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Finding the Fourth Proportional to 471,828.80, 707,282.40 and 422,062.40

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Solution

The fourth proportional to 471,828.80, 707,282.40 and 422,062.40 is: 632,681.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    471,828.80 : 707,282.40 = 422,062.40 : x
  2. Step 2: Convert to fraction form
    471,828.80/707,282.40 = 422,062.40/x
  3. Step 3: Cross multiply
    471,828.80x = 707,282.40 × 422,062.40
  4. Step 4: Simplify right side
    471,828.80x = 298,517,307,221.76
  5. Step 5: Solve for x
    x = 298,517,307,221.76/471,828.80
  6. Step 6: Final answer
    x = 632,681.40

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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.