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Finding the Fourth Proportional to 545,870.70, 818,806.05 and 190,920.60

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Solution

The fourth proportional to 545,870.70, 818,806.05 and 190,920.60 is: 286,380.90

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,870.70 : 818,806.05 = 190,920.60 : x
  2. Step 2: Convert to fraction form
    545,870.70/818,806.05 = 190,920.60/x
  3. Step 3: Cross multiply
    545,870.70x = 818,806.05 × 190,920.60
  4. Step 4: Simplify right side
    545,870.70x = 156,326,942,349.63
  5. Step 5: Solve for x
    x = 156,326,942,349.63/545,870.70
  6. Step 6: Final answer
    x = 286,380.90

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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.