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Finding the Fourth Proportional to 445,132.87, 668,366.37 and 385,345.76

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Solution

The fourth proportional to 445,132.87, 668,366.37 and 385,345.76 is: 578,596.11

Step by Step Solution

  1. Step 1: Write the proportion equation
    445,132.87 : 668,366.37 = 385,345.76 : x
  2. Step 2: Convert to fraction form
    445,132.87/668,366.37 = 385,345.76/x
  3. Step 3: Cross multiply
    445,132.87x = 668,366.37 × 385,345.76
  4. Step 4: Simplify right side
    445,132.87x = 257,552,143,464.26
  5. Step 5: Solve for x
    x = 257,552,143,464.26/445,132.87
  6. Step 6: Final answer
    x = 578,596.11

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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.