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Finding the Fourth Proportional to 525,685.95, 788,528.84 and 126,326.72

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Solution

The fourth proportional to 525,685.95, 788,528.84 and 126,326.72 is: 189,490.05

Step by Step Solution

  1. Step 1: Write the proportion equation
    525,685.95 : 788,528.84 = 126,326.72 : x
  2. Step 2: Convert to fraction form
    525,685.95/788,528.84 = 126,326.72/x
  3. Step 3: Cross multiply
    525,685.95x = 788,528.84 × 126,326.72
  4. Step 4: Simplify right side
    525,685.95x = 99,612,257,408.33
  5. Step 5: Solve for x
    x = 99,612,257,408.33/525,685.95
  6. Step 6: Final answer
    x = 189,490.05

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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.