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Finding the Fourth Proportional to 415,855.48, 623,265.18 and 190,976.84

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Solution

The fourth proportional to 415,855.48, 623,265.18 and 190,976.84 is: 286,227.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,855.48 : 623,265.18 = 190,976.84 : x
  2. Step 2: Convert to fraction form
    415,855.48/623,265.18 = 190,976.84/x
  3. Step 3: Cross multiply
    415,855.48x = 623,265.18 × 190,976.84
  4. Step 4: Simplify right side
    415,855.48x = 119,029,214,558.43
  5. Step 5: Solve for x
    x = 119,029,214,558.43/415,855.48
  6. Step 6: Final answer
    x = 286,227.36

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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.