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Finding the Fourth Proportional to 111,712.40, 167,617.20 and 56,308.40

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Solution

The fourth proportional to 111,712.40, 167,617.20 and 56,308.40 is: 84,487.10

Step by Step Solution

  1. Step 1: Write the proportion equation
    111,712.40 : 167,617.20 = 56,308.40 : x
  2. Step 2: Convert to fraction form
    111,712.40/167,617.20 = 56,308.40/x
  3. Step 3: Cross multiply
    111,712.40x = 167,617.20 × 56,308.40
  4. Step 4: Simplify right side
    111,712.40x = 9,438,256,344.48
  5. Step 5: Solve for x
    x = 9,438,256,344.48/111,712.40
  6. Step 6: Final answer
    x = 84,487.10

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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.