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Finding the Fourth Proportional to 545,876.10, 818,929.35 and 171,936.90

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Solution

The fourth proportional to 545,876.10, 818,929.35 and 171,936.90 is: 257,941.64

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,876.10 : 818,929.35 = 171,936.90 : x
  2. Step 2: Convert to fraction form
    545,876.10/818,929.35 = 171,936.90/x
  3. Step 3: Cross multiply
    545,876.10x = 818,929.35 × 171,936.90
  4. Step 4: Simplify right side
    545,876.10x = 140,804,173,758.02
  5. Step 5: Solve for x
    x = 140,804,173,758.02/545,876.10
  6. Step 6: Final answer
    x = 257,941.64

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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.