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Finding the Fourth Proportional to 185,504.13, 278,223.93 and 85,655.88

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Solution

The fourth proportional to 185,504.13, 278,223.93 and 85,655.88 is: 128,468.92

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,504.13 : 278,223.93 = 85,655.88 : x
  2. Step 2: Convert to fraction form
    185,504.13/278,223.93 = 85,655.88/x
  3. Step 3: Cross multiply
    185,504.13x = 278,223.93 × 85,655.88
  4. Step 4: Simplify right side
    185,504.13x = 23,831,515,561.21
  5. Step 5: Solve for x
    x = 23,831,515,561.21/185,504.13
  6. Step 6: Final answer
    x = 128,468.92

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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.