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Finding the Fourth Proportional to 111,461.79, 153,817.28 and 63,716.21

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Solution

The fourth proportional to 111,461.79, 153,817.28 and 63,716.21 is: 87,928.38

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,461.79 : 153,817.28 = 63,716.21 : x
  2. Step 2: Convert to fraction form
    111,461.79/153,817.28 = 63,716.21/x
  3. Step 3: Cross multiply
    111,461.79x = 153,817.28 × 63,716.21
  4. Step 4: Simplify right side
    111,461.79x = 9,800,654,114.11
  5. Step 5: Solve for x
    x = 9,800,654,114.11/111,461.79
  6. Step 6: Final answer
    x = 87,928.38

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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.