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Finding the Fourth Proportional to 525,766.61, 788,649.92 and 126,407.39

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Solution

The fourth proportional to 525,766.61, 788,649.92 and 126,407.39 is: 189,611.08

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,766.61 : 788,649.92 = 126,407.39 : x
  2. Step 2: Convert to fraction form
    525,766.61/788,649.92 = 126,407.39/x
  3. Step 3: Cross multiply
    525,766.61x = 788,649.92 × 126,407.39
  4. Step 4: Simplify right side
    525,766.61x = 99,691,174,383.68
  5. Step 5: Solve for x
    x = 99,691,174,383.68/525,766.61
  6. Step 6: Final answer
    x = 189,611.08

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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.