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Finding the Fourth Proportional to 1,167,957, 1,611,782.28 and 631,413

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Solution

The fourth proportional to 1,167,957, 1,611,782.28 and 631,413 is: 871,350.82

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,167,957 : 1,611,782.28 = 631,413 : x
  2. Step 2: Convert to fraction form
    1,167,957/1,611,782.28 = 631,413/x
  3. Step 3: Cross multiply
    1,167,957x = 1,611,782.28 × 631,413
  4. Step 4: Simplify right side
    1,167,957x = 1,017,700,284,761.64
  5. Step 5: Solve for x
    x = 1,017,700,284,761.64/1,167,957
  6. Step 6: Final answer
    x = 871,350.82

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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.