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Finding the Fourth Proportional to 67,272.64, 101,259.76 and 57,124.96

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Solution

The fourth proportional to 67,272.64, 101,259.76 and 57,124.96 is: 85,985.32

Step by Step Solution

  1. Step 1: Write the proportion equation
    67,272.64 : 101,259.76 = 57,124.96 : x
  2. Step 2: Convert to fraction form
    67,272.64/101,259.76 = 57,124.96/x
  3. Step 3: Cross multiply
    67,272.64x = 101,259.76 × 57,124.96
  4. Step 4: Simplify right side
    67,272.64x = 5,784,459,739.61
  5. Step 5: Solve for x
    x = 5,784,459,739.61/67,272.64
  6. Step 6: Final answer
    x = 85,985.32

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Why These Related Problems?

These problems maintain the same ratio (1.51) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.