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Finding the Fourth Proportional to 572,064.65, 857,112.83 and 372,282.20

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Solution

The fourth proportional to 572,064.65, 857,112.83 and 372,282.20 is: 557,782.85

Step by Step Solution

  1. Step 1: Write the proportion equation
    572,064.65 : 857,112.83 = 372,282.20 : x
  2. Step 2: Convert to fraction form
    572,064.65/857,112.83 = 372,282.20/x
  3. Step 3: Cross multiply
    572,064.65x = 857,112.83 × 372,282.20
  4. Step 4: Simplify right side
    572,064.65x = 319,087,848,139.22
  5. Step 5: Solve for x
    x = 319,087,848,139.22/572,064.65
  6. Step 6: Final answer
    x = 557,782.85

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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.