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Finding the Fourth Proportional to 545,933.40, 818,900.10 and 190,910.40

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Solution

The fourth proportional to 545,933.40, 818,900.10 and 190,910.40 is: 286,365.60

Step by Step Solution

  1. Step 1: Write the proportion equation
    545,933.40 : 818,900.10 = 190,910.40 : x
  2. Step 2: Convert to fraction form
    545,933.40/818,900.10 = 190,910.40/x
  3. Step 3: Cross multiply
    545,933.40x = 818,900.10 × 190,910.40
  4. Step 4: Simplify right side
    545,933.40x = 156,336,545,651.04
  5. Step 5: Solve for x
    x = 156,336,545,651.04/545,933.40
  6. Step 6: Final answer
    x = 286,365.60

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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.