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Finding the Fourth Proportional to 112,510.72, 155,259.84 and 62,208.64

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Solution

The fourth proportional to 112,510.72, 155,259.84 and 62,208.64 is: 85,845.18

Step by Step Solution

  1. Step 1: Write the proportion equation
    112,510.72 : 155,259.84 = 62,208.64 : x
  2. Step 2: Convert to fraction form
    112,510.72/155,259.84 = 62,208.64/x
  3. Step 3: Cross multiply
    112,510.72x = 155,259.84 × 62,208.64
  4. Step 4: Simplify right side
    112,510.72x = 9,658,503,493.02
  5. Step 5: Solve for x
    x = 9,658,503,493.02/112,510.72
  6. Step 6: Final answer
    x = 85,845.18

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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.