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Finding the Fourth Proportional to 426,501.92, 639,753.64 and 110,958.32

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Solution

The fourth proportional to 426,501.92, 639,753.64 and 110,958.32 is: 166,437.68

Step by Step Solution

  1. Step 1: Write the proportion equation
    426,501.92 : 639,753.64 = 110,958.32 : x
  2. Step 2: Convert to fraction form
    426,501.92/639,753.64 = 110,958.32/x
  3. Step 3: Cross multiply
    426,501.92x = 639,753.64 × 110,958.32
  4. Step 4: Simplify right side
    426,501.92x = 70,985,989,108.28
  5. Step 5: Solve for x
    x = 70,985,989,108.28/426,501.92
  6. Step 6: Final answer
    x = 166,437.68

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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.