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Finding the Fourth Proportional to 120,632.54, 166,459.48 and 66,904.10

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Solution

The fourth proportional to 120,632.54, 166,459.48 and 66,904.10 is: 92,320.21

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,632.54 : 166,459.48 = 66,904.10 : x
  2. Step 2: Convert to fraction form
    120,632.54/166,459.48 = 66,904.10/x
  3. Step 3: Cross multiply
    120,632.54x = 166,459.48 × 66,904.10
  4. Step 4: Simplify right side
    120,632.54x = 11,136,821,695.87
  5. Step 5: Solve for x
    x = 11,136,821,695.87/120,632.54
  6. Step 6: Final answer
    x = 92,320.21

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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.