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Finding the Fourth Proportional to 385,597.67, 578,420.96 and 119,335.82

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Solution

The fourth proportional to 385,597.67, 578,420.96 and 119,335.82 is: 179,011.29

Step by Step Solution

  1. Step 1: Write the proportion equation
    385,597.67 : 578,420.96 = 119,335.82 : x
  2. Step 2: Convert to fraction form
    385,597.67/578,420.96 = 119,335.82/x
  3. Step 3: Cross multiply
    385,597.67x = 578,420.96 × 119,335.82
  4. Step 4: Simplify right side
    385,597.67x = 69,026,336,078.00
  5. Step 5: Solve for x
    x = 69,026,336,078.00/385,597.67
  6. Step 6: Final answer
    x = 179,011.29

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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.