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Finding the Fourth Proportional to 526,909.37, 790,366.10 and 127,549.49

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Solution

The fourth proportional to 526,909.37, 790,366.10 and 127,549.49 is: 191,324.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    526,909.37 : 790,366.10 = 127,549.49 : x
  2. Step 2: Convert to fraction form
    526,909.37/790,366.10 = 127,549.49/x
  3. Step 3: Cross multiply
    526,909.37x = 790,366.10 × 127,549.49
  4. Step 4: Simplify right side
    526,909.37x = 100,810,788,378.71
  5. Step 5: Solve for x
    x = 100,810,788,378.71/526,909.37
  6. Step 6: Final answer
    x = 191,324.72

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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.