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Finding the Fourth Proportional to 545,706.30, 818,559.45 and 171,729.30

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Solution

The fourth proportional to 545,706.30, 818,559.45 and 171,729.30 is: 257,593.95

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,706.30 : 818,559.45 = 171,729.30 : x
  2. Step 2: Convert to fraction form
    545,706.30/818,559.45 = 171,729.30/x
  3. Step 3: Cross multiply
    545,706.30x = 818,559.45 × 171,729.30
  4. Step 4: Simplify right side
    545,706.30x = 140,570,641,356.89
  5. Step 5: Solve for x
    x = 140,570,641,356.89/545,706.30
  6. Step 6: Final answer
    x = 257,593.95

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Double scale
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Similar ratio
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1.5x scale

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.