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Finding the Fourth Proportional to 639,099.52, 882,276.93 and 397,459.94

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Solution

The fourth proportional to 639,099.52, 882,276.93 and 397,459.94 is: 548,693.47

Step by Step Solution

  1. Step 1: Write the proportion equation
    639,099.52 : 882,276.93 = 397,459.94 : x
  2. Step 2: Convert to fraction form
    639,099.52/882,276.93 = 397,459.94/x
  3. Step 3: Cross multiply
    639,099.52x = 882,276.93 × 397,459.94
  4. Step 4: Simplify right side
    639,099.52x = 350,669,734,849.06
  5. Step 5: Solve for x
    x = 350,669,734,849.06/639,099.52
  6. Step 6: Final answer
    x = 548,693.47

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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.