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Finding the Fourth Proportional to 415,609.69, 623,414.54 and 191,158.91

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Solution

The fourth proportional to 415,609.69, 623,414.54 and 191,158.91 is: 286,738.36

Step by Step Solution

  1. Step 1: Write the proportion equation
    415,609.69 : 623,414.54 = 191,158.91 : x
  2. Step 2: Convert to fraction form
    415,609.69/623,414.54 = 191,158.91/x
  3. Step 3: Cross multiply
    415,609.69x = 623,414.54 × 191,158.91
  4. Step 4: Simplify right side
    415,609.69x = 119,171,239,871.68
  5. Step 5: Solve for x
    x = 119,171,239,871.68/415,609.69
  6. Step 6: Final answer
    x = 286,738.36

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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.