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Finding the Fourth Proportional to 666,804.08, 919,578.32 and 445,655.25

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Solution

The fourth proportional to 666,804.08, 919,578.32 and 445,655.25 is: 614,595.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    666,804.08 : 919,578.32 = 445,655.25 : x
  2. Step 2: Convert to fraction form
    666,804.08/919,578.32 = 445,655.25/x
  3. Step 3: Cross multiply
    666,804.08x = 919,578.32 × 445,655.25
  4. Step 4: Simplify right side
    666,804.08x = 409,814,905,537.11
  5. Step 5: Solve for x
    x = 409,814,905,537.11/666,804.08
  6. Step 6: Final answer
    x = 614,595.68

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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.