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Finding the Fourth Proportional to 563,027.12, 776,992.54 and 317,992.22

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Solution

The fourth proportional to 563,027.12, 776,992.54 and 317,992.22 is: 438,837.80

Step by Step Solution

  1. Step 1: Write the proportion equation
    563,027.12 : 776,992.54 = 317,992.22 : x
  2. Step 2: Convert to fraction form
    563,027.12/776,992.54 = 317,992.22/x
  3. Step 3: Cross multiply
    563,027.12x = 776,992.54 × 317,992.22
  4. Step 4: Simplify right side
    563,027.12x = 247,077,582,718.04
  5. Step 5: Solve for x
    x = 247,077,582,718.04/563,027.12
  6. Step 6: Final answer
    x = 438,837.80

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Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.