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Finding the Fourth Proportional to 66,923.10, 100,406.52 and 48,187.80

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Solution

The fourth proportional to 66,923.10, 100,406.52 and 48,187.80 is: 72,297.45

Step by Step Solution

  1. Step 1: Write the proportion equation
    66,923.10 : 100,406.52 = 48,187.80 : x
  2. Step 2: Convert to fraction form
    66,923.10/100,406.52 = 48,187.80/x
  3. Step 3: Cross multiply
    66,923.10x = 100,406.52 × 48,187.80
  4. Step 4: Simplify right side
    66,923.10x = 4,838,369,304.46
  5. Step 5: Solve for x
    x = 4,838,369,304.46/66,923.10
  6. Step 6: Final answer
    x = 72,297.45

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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.