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Finding the Fourth Proportional to 397,154.32, 548,152.68 and 235,978.36

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Solution

The fourth proportional to 397,154.32, 548,152.68 and 235,978.36 is: 325,697.50

Step by Step Solution

  1. Step 1: Write the proportion equation
    397,154.32 : 548,152.68 = 235,978.36 : x
  2. Step 2: Convert to fraction form
    397,154.32/548,152.68 = 235,978.36/x
  3. Step 3: Cross multiply
    397,154.32x = 548,152.68 × 235,978.36
  4. Step 4: Simplify right side
    397,154.32x = 129,352,170,456.01
  5. Step 5: Solve for x
    x = 129,352,170,456.01/397,154.32
  6. Step 6: Final answer
    x = 325,697.50

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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.