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Finding the Fourth Proportional to 561,567.69, 775,101.11 and 319,992.66

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Solution

The fourth proportional to 561,567.69, 775,101.11 and 319,992.66 is: 441,668.33

Step by Step Solution

  1. Step 1: Write the proportion equation
    561,567.69 : 775,101.11 = 319,992.66 : x
  2. Step 2: Convert to fraction form
    561,567.69/775,101.11 = 319,992.66/x
  3. Step 3: Cross multiply
    561,567.69x = 775,101.11 × 319,992.66
  4. Step 4: Simplify right side
    561,567.69x = 248,026,664,357.89
  5. Step 5: Solve for x
    x = 248,026,664,357.89/561,567.69
  6. Step 6: Final answer
    x = 441,668.33

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Half scale
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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 (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.