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Finding the Fourth Proportional to 185,485.88, 278,196.51 and 85,637.54

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Solution

The fourth proportional to 185,485.88, 278,196.51 and 85,637.54 is: 128,441.39

Step by Step Solution

  1. Step 1: Write the proportion equation
    185,485.88 : 278,196.51 = 85,637.54 : x
  2. Step 2: Convert to fraction form
    185,485.88/278,196.51 = 85,637.54/x
  3. Step 3: Cross multiply
    185,485.88x = 278,196.51 × 85,637.54
  4. Step 4: Simplify right side
    185,485.88x = 23,824,064,752.99
  5. Step 5: Solve for x
    x = 23,824,064,752.99/185,485.88
  6. Step 6: Final answer
    x = 128,441.39

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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.