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Finding the Fourth Proportional to 521,570.10, 783,305.55 and 456,251.70

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Solution

The fourth proportional to 521,570.10, 783,305.55 and 456,251.70 is: 685,208.93

Step by Step Solution

  1. Step 1: Write the proportion equation
    521,570.10 : 783,305.55 = 456,251.70 : x
  2. Step 2: Convert to fraction form
    521,570.10/783,305.55 = 456,251.70/x
  3. Step 3: Cross multiply
    521,570.10x = 783,305.55 × 456,251.70
  4. Step 4: Simplify right side
    521,570.10x = 357,384,488,806.94
  5. Step 5: Solve for x
    x = 357,384,488,806.94/521,570.10
  6. Step 6: Final answer
    x = 685,208.93

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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.