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Finding the Fourth Proportional to 554,992.92, 831,148 and 317,615.96

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Solution

The fourth proportional to 554,992.92, 831,148 and 317,615.96 is: 475,656.28

Step by Step Solution

  1. Step 1: Write the proportion equation
    554,992.92 : 831,148 = 317,615.96 : x
  2. Step 2: Convert to fraction form
    554,992.92/831,148 = 317,615.96/x
  3. Step 3: Cross multiply
    554,992.92x = 831,148 × 317,615.96
  4. Step 4: Simplify right side
    554,992.92x = 263,985,869,922.08
  5. Step 5: Solve for x
    x = 263,985,869,922.08/554,992.92
  6. Step 6: Final answer
    x = 475,656.28

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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.