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Finding the Fourth Proportional to 1,093,706.10, 1,640,559.15 and 827,985.60

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Solution

The fourth proportional to 1,093,706.10, 1,640,559.15 and 827,985.60 is: 1,241,978.40

Step by Step Solution

  1. Step 1: Write the proportion equation
    1,093,706.10 : 1,640,559.15 = 827,985.60 : x
  2. Step 2: Convert to fraction form
    1,093,706.10/1,640,559.15 = 827,985.60/x
  3. Step 3: Cross multiply
    1,093,706.10x = 1,640,559.15 × 827,985.60
  4. Step 4: Simplify right side
    1,093,706.10x = 1,358,359,352,148.24
  5. Step 5: Solve for x
    x = 1,358,359,352,148.24/1,093,706.10
  6. Step 6: Final answer
    x = 1,241,978.40

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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.