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Finding the Fourth Proportional to 441,332.61, 661,163.73 and 260,877.77

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Solution

The fourth proportional to 441,332.61, 661,163.73 and 260,877.77 is: 390,822.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    441,332.61 : 661,163.73 = 260,877.77 : x
  2. Step 2: Convert to fraction form
    441,332.61/661,163.73 = 260,877.77/x
  3. Step 3: Cross multiply
    441,332.61x = 661,163.73 × 260,877.77
  4. Step 4: Simplify right side
    441,332.61x = 172,482,919,487.28
  5. Step 5: Solve for x
    x = 172,482,919,487.28/441,332.61
  6. Step 6: Final answer
    x = 390,822.97

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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.