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Finding the Fourth Proportional to 111,392.62, 153,729.96 and 63,644.94

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Solution

The fourth proportional to 111,392.62, 153,729.96 and 63,644.94 is: 87,834.67

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,392.62 : 153,729.96 = 63,644.94 : x
  2. Step 2: Convert to fraction form
    111,392.62/153,729.96 = 63,644.94/x
  3. Step 3: Cross multiply
    111,392.62x = 153,729.96 × 63,644.94
  4. Step 4: Simplify right side
    111,392.62x = 9,784,134,080.40
  5. Step 5: Solve for x
    x = 9,784,134,080.40/111,392.62
  6. Step 6: Final answer
    x = 87,834.67

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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.