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Finding the Fourth Proportional to 120,353.19, 166,090.00 and 65,907.66

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Solution

The fourth proportional to 120,353.19, 166,090.00 and 65,907.66 is: 90,953.99

Step by Step Solution

  1. Step 1: Write the proportion equation
    120,353.19 : 166,090.00 = 65,907.66 : x
  2. Step 2: Convert to fraction form
    120,353.19/166,090.00 = 65,907.66/x
  3. Step 3: Cross multiply
    120,353.19x = 166,090.00 × 65,907.66
  4. Step 4: Simplify right side
    120,353.19x = 10,946,602,583.72
  5. Step 5: Solve for x
    x = 10,946,602,583.72/120,353.19
  6. Step 6: Final answer
    x = 90,953.99

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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.