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Finding the Fourth Proportional to 698,111.88, 963,394.48 and 388,014.44

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Solution

The fourth proportional to 698,111.88, 963,394.48 and 388,014.44 is: 535,459.97

Step by Step Solution

  1. Step 1: Write the proportion equation
    698,111.88 : 963,394.48 = 388,014.44 : x
  2. Step 2: Convert to fraction form
    698,111.88/963,394.48 = 388,014.44/x
  3. Step 3: Cross multiply
    698,111.88x = 963,394.48 × 388,014.44
  4. Step 4: Simplify right side
    698,111.88x = 373,810,969,656.29
  5. Step 5: Solve for x
    x = 373,810,969,656.29/698,111.88
  6. Step 6: Final answer
    x = 535,459.97

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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.