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Finding the Fourth Proportional to 545,911.74, 818,702.37 and 190,859.58

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Solution

The fourth proportional to 545,911.74, 818,702.37 and 190,859.58 is: 286,231.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,911.74 : 818,702.37 = 190,859.58 : x
  2. Step 2: Convert to fraction form
    545,911.74/818,702.37 = 190,859.58/x
  3. Step 3: Cross multiply
    545,911.74x = 818,702.37 × 190,859.58
  4. Step 4: Simplify right side
    545,911.74x = 156,257,190,483.21
  5. Step 5: Solve for x
    x = 156,257,190,483.21/545,911.74
  6. Step 6: Final answer
    x = 286,231.60

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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.