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Finding the Fourth Proportional to 67,235.40, 100,853.10 and 64,009.80

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Solution

The fourth proportional to 67,235.40, 100,853.10 and 64,009.80 is: 96,014.70

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,235.40 : 100,853.10 = 64,009.80 : x
  2. Step 2: Convert to fraction form
    67,235.40/100,853.10 = 64,009.80/x
  3. Step 3: Cross multiply
    67,235.40x = 100,853.10 × 64,009.80
  4. Step 4: Simplify right side
    67,235.40x = 6,455,586,760.38
  5. Step 5: Solve for x
    x = 6,455,586,760.38/67,235.40
  6. Step 6: Final answer
    x = 96,014.70

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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.