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Finding the Fourth Proportional to 906,607.16, 1,359,726.42 and 861,644.60

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Solution

The fourth proportional to 906,607.16, 1,359,726.42 and 861,644.60 is: 1,292,291.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    906,607.16 : 1,359,726.42 = 861,644.60 : x
  2. Step 2: Convert to fraction form
    906,607.16/1,359,726.42 = 861,644.60/x
  3. Step 3: Cross multiply
    906,607.16x = 1,359,726.42 × 861,644.60
  4. Step 4: Simplify right side
    906,607.16x = 1,171,600,927,270.33
  5. Step 5: Solve for x
    x = 1,171,600,927,270.33/906,607.16
  6. Step 6: Final answer
    x = 1,292,291.72

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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.