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Finding the Fourth Proportional to 911,135.40, 1,366,703.10 and 867,589.80

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Solution

The fourth proportional to 911,135.40, 1,366,703.10 and 867,589.80 is: 1,301,384.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    911,135.40 : 1,366,703.10 = 867,589.80 : x
  2. Step 2: Convert to fraction form
    911,135.40/1,366,703.10 = 867,589.80/x
  3. Step 3: Cross multiply
    911,135.40x = 1,366,703.10 × 867,589.80
  4. Step 4: Simplify right side
    911,135.40x = 1,185,737,669,188.38
  5. Step 5: Solve for x
    x = 1,185,737,669,188.38/911,135.40
  6. Step 6: Final answer
    x = 1,301,384.70

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These problems maintain the same ratio (1.50) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.