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Finding the Fourth Proportional to 519,591.79, 717,442.14 and 398,541.34

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Solution

The fourth proportional to 519,591.79, 717,442.14 and 398,541.34 is: 550,298.06

Step by Step Solution

  1. Step 1: Write the proportion equation
    519,591.79 : 717,442.14 = 398,541.34 : x
  2. Step 2: Convert to fraction form
    519,591.79/717,442.14 = 398,541.34/x
  3. Step 3: Cross multiply
    519,591.79x = 717,442.14 × 398,541.34
  4. Step 4: Simplify right side
    519,591.79x = 285,930,351,848.07
  5. Step 5: Solve for x
    x = 285,930,351,848.07/519,591.79
  6. Step 6: Final answer
    x = 550,298.06

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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.